Re: [beagleboard] Maximum SD card size for BBB
I installed a SanDisk 64G, reformatted the partition as ext4. Gio@beaglebone:~$ mount (...) /dev/mmcblk0p1 61241372 53064 611883081% /mnt Gio@beaglebone:~$ python Python 2.7.3 (default. Mar 14 2014, 17:55:54) [GCC 4.6.3] on linux2 Type help, copyright, credits or License for more information. 1024*1024*33 34603008 Gio@beaglebone:~$ date Wed Apr 23 21:40:16 UTC 2014 Gio@beaglebone:~$ dd if=/dev/zero of=/mnt/test.file bs=1024 count=34603008 34603008+0 records in 34603008+0 records out 35433480192 Bytes (35 GB) copied, 4940.65 s, 7.2 MB/s Gio@beaglebone:~$ date Wed Apr 23 23:04:58 UTC 2014 Gio@beaglebone:~$ date Wed Apr 23 23:08:02 UTC 2014 Gio@beaglebone:~$ sha1sum /mnt/test.file 6854fc38cb41ed19a43ade369bfba28ae0ec72d8 /mnt/test.file Gio@beaglebone:~$ date Wed Apr 23 23:41:33 UTC 2014 Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read. (I obviously haven't set up NTP yet! Guess I better do that.) On Friday, November 21, 2014 8:17:59 PM UTC-6, liyaoshi wrote: This is surprise me Can someone do another test like one single file over than 32G ? 2014-11-22 6:36 GMT+08:00 Robert Nelson robert...@gmail.com javascript: : On Fri, Nov 21, 2014 at 4:11 PM, William Hermans yyr...@gmail.com javascript: wrote: Robert, So am I reading this correctly, and you've got the system to boot off an SDXC card ? Well at least mounting the rootfs from it ? That is correct, it's been running tests all day. I've been trying to find a good sdxc implementation manual, as i thought they changed the base command set. Unless SanDisk, put their own hardware compatibility layer.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
*Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read.* *(I obviously haven't set up NTP yet! Guess I better do that.)* Is that and older kernel with an older device tree overlay ? Almost seems as though the 4bit patch has not been applied to your device tree overlay. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
3.8.13-bone47, I just got the board. I'm updating now, we'll check on the times again. On Sunday, November 23, 2014 2:23:40 PM UTC-6, William Hermans wrote: *Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read.* *(I obviously haven't set up NTP yet! Guess I better do that.)* Is that and older kernel with an older device tree overlay ? Almost seems as though the 4bit patch has not been applied to your device tree overlay. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
That is the same kernel version I am running. As I recall the patch was applied back somewhere around 3.8.13-bone2x. On Sun, Nov 23, 2014 at 1:26 PM, Paul Giordano gio.down...@gmail.com wrote: 3.8.13-bone47, I just got the board. I'm updating now, we'll check on the times again. On Sunday, November 23, 2014 2:23:40 PM UTC-6, William Hermans wrote: *Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read.* *(I obviously haven't set up NTP yet! Guess I better do that.)* Is that and older kernel with an older device tree overlay ? Almost seems as though the 4bit patch has not been applied to your device tree overlay. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Sun, Nov 23, 2014 at 2:36 PM, William Hermans yyrk...@gmail.com wrote: That is the same kernel version I am running. As I recall the patch was applied back somewhere around 3.8.13-bone2x. Well, i was seeing 20Mb/sec read via hdparm, so the 30minutes to read makes sense.. I wonder if the deal with the ip, is we just don not have UHS-I/UHS-II support.. http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus On a side note, none of my usb-sdhc adapters can read my SanDisk sdxc card without a kernel opps on x86, (v3.18-rc5) so i can't test till i get back to work. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
*I wonder if the deal with the ip, is we just don not have UHS-I/UHS-II support..* * http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus* * On a side note, none of my usb-sdhc adapters can read my SanDisk sdxc* * card without a kernel opps on x86, (v3.18-rc5) so i can't test till i* * get back to work.* I was wondering about this the other night. Not the specifics, as I pretty much know nothing about the low level standards of each implementation. But the idea that similar hardware can be enabled or disabled in software. Thus making for an easy hack to get more features by paying less. This sort of thing has after all been done before. . . On Sun, Nov 23, 2014 at 1:42 PM, Robert Nelson robertcnel...@gmail.com wrote: On Sun, Nov 23, 2014 at 2:36 PM, William Hermans yyrk...@gmail.com wrote: That is the same kernel version I am running. As I recall the patch was applied back somewhere around 3.8.13-bone2x. Well, i was seeing 20Mb/sec read via hdparm, so the 30minutes to read makes sense.. I wonder if the deal with the ip, is we just don not have UHS-I/UHS-II support.. http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus On a side note, none of my usb-sdhc adapters can read my SanDisk sdxc card without a kernel opps on x86, (v3.18-rc5) so i can't test till i get back to work. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Sun, Nov 23, 2014 at 2:51 PM, William Hermans yyrk...@gmail.com wrote: *I wonder if the deal with the ip, is we just don not have UHS-I/UHS-II support..* * http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus http://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_bus* * On a side note, none of my usb-sdhc adapters can read my SanDisk sdxc* * card without a kernel opps on x86, (v3.18-rc5) so i can't test till i* * get back to work.* I was wondering about this the other night. Not the specifics, as I pretty much know nothing about the low level standards of each implementation. But the idea that similar hardware can be enabled or disabled in software. Thus making for an easy hack to get more features by paying less. This sort of thing has after all been done before. . . Plus, we were assuming SanDisk just threw out their old controller and did the SDXC implementation by scratch. They probably just saved the man hours and bolted the SDXC support on the older controller.. But i wonder how they are donig the 32GB limitation of SDHC... if only the SDHC/SDXC spec was open! ;) Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Ah. Thanks for letting me know. I thought about trying the debian kernel at 3.13, but maybe I'll wait on that. Neat board so far. On Sunday, November 23, 2014 2:36:22 PM UTC-6, William Hermans wrote: That is the same kernel version I am running. As I recall the patch was applied back somewhere around 3.8.13-bone2x. On Sun, Nov 23, 2014 at 1:26 PM, Paul Giordano gio.d...@gmail.com javascript: wrote: 3.8.13-bone47, I just got the board. I'm updating now, we'll check on the times again. On Sunday, November 23, 2014 2:23:40 PM UTC-6, William Hermans wrote: *Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read.* *(I obviously haven't set up NTP yet! Guess I better do that.)* Is that and older kernel with an older device tree overlay ? Almost seems as though the 4bit patch has not been applied to your device tree overlay. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Paul, the only real differences between 3.8.x and say 3.14.x is. . . 1. SGX support. 2. USB hotplug. 3. Device tree overlay are used differently - Depending. If I forgot something, someone else will speak up I'm sure, but those are the 3 most important features in my own mind. SGX support is still there in 3.8.x, *somewhat* but is frame buffer only if I am remembering right. Hot plugging USB, or even ethernet while the system is up and running will cause a seg fault or kernel oops. Which just means you need to power down, make your changes, and power back up. Dynamically loading device tree files while the system is up ( no reboots needed ) can only be done with 3.8.x. Charles S has also made a set of generic device tree overlays that allow for pin multiplexing on the fly for both kernel branches though. Although, this is somewhat limited if i understand correctly. Unloading a device tree file still requires a reboot though. At least for 3.8.x, unless things have recently changed without my knowledge. Anyway, you can scour the groups for information or even use google to find out more and possibly accurate information on all the above. On Sun, Nov 23, 2014 at 1:57 PM, Paul Giordano gio.down...@gmail.com wrote: Ah. Thanks for letting me know. I thought about trying the debian kernel at 3.13, but maybe I'll wait on that. Neat board so far. On Sunday, November 23, 2014 2:36:22 PM UTC-6, William Hermans wrote: That is the same kernel version I am running. As I recall the patch was applied back somewhere around 3.8.13-bone2x. On Sun, Nov 23, 2014 at 1:26 PM, Paul Giordano gio.d...@gmail.com wrote: 3.8.13-bone47, I just got the board. I'm updating now, we'll check on the times again. On Sunday, November 23, 2014 2:23:40 PM UTC-6, William Hermans wrote: *Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read.* *(I obviously haven't set up NTP yet! Guess I better do that.)* Is that and older kernel with an older device tree overlay ? Almost seems as though the 4bit patch has not been applied to your device tree overlay. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Sun, Nov 23, 2014 at 8:13 PM, liyaoshi liyao...@gmail.com wrote: seems Ti update am335x mmc ip from dm814x http://www.ti.com/lit/ug/sprugz8e/sprugz8e.pdf page 2260 while from http://www.ti.com/lit/ug/spruh73k/spruh73k.pdf page 4104 • Support for SDA 3.0 Part A2 programming model This mean am335x can support sdxc card , maybe just lack of 200M clock and ddr mode A search on that turned up: https://www.sdcard.org/downloads/pls/simplified_specs/archive/partA2_300.pdf https://www.sdcard.org/downloads/pls/simplified_specs/ Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Sun, Nov 23, 2014 at 8:23 PM, Robert Nelson robertcnel...@gmail.com wrote: On Sun, Nov 23, 2014 at 8:13 PM, liyaoshi liyao...@gmail.com wrote: seems Ti update am335x mmc ip from dm814x http://www.ti.com/lit/ug/sprugz8e/sprugz8e.pdf page 2260 while from http://www.ti.com/lit/ug/spruh73k/spruh73k.pdf page 4104 • Support for SDA 3.0 Part A2 programming model This mean am335x can support sdxc card , maybe just lack of 200M clock and ddr mode A search on that turned up: https://www.sdcard.org/downloads/pls/simplified_specs/archive/partA2_300.pdf https://www.sdcard.org/downloads/pls/simplified_specs/ From the am335x errata sheet: MMC0, MMC1, MMC2 Interfaces – Only Standard (STD) and High Speed (HS) modes are supported. SDR12, SDR25, SDR50 modes as defined in SD3.0 specification are not supported. So it's complaint to SD3.0 except for the transfer speeds. I guess if your TI and you have that issue, it's just safer to advertise it as SD/SDHC only. Instead of having users complain about it being SDXC and piss ass slow.. ;) Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
So buy a flash memory stick ? Or put a ssd in an external enclosure . . . On Thu, Nov 20, 2014 at 11:22 PM, Brian Heckathorne neo...@gmail.com wrote: Thank you very much that info should be in the bbb wiki very helpful and good to know. Especially that a usb device could solve the issue. I take lots of pictures order of thousands and need the space but dont want to goto a power hungry usb disk drive. On Nov 20, 2014 10:15 PM, Robert Nelson robertcnel...@gmail.com wrote: On Thu, Nov 20, 2014 at 10:12 PM, Brian neo...@gmail.com wrote: Maybe the correct question is what does the BBB have? Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible. Is it an SDHC or SDXC? The ip block on the am335x can not handle SDXC, you'll have to use an external usb adapter to use SDXC cards on the bbb. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/rK3y2ih1kig/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Would SDXC work if reformatted to get rid of Microsoft's proprietary exFAT filesystem or is the hardware limited to 32GB? Just curious, haven't needed anything larger than 32. On Nov 21, 2014 7:15 AM, William Hermans yyrk...@gmail.com wrote: So buy a flash memory stick ? Or put a ssd in an external enclosure . . . On Thu, Nov 20, 2014 at 11:22 PM, Brian Heckathorne neo...@gmail.com wrote: Thank you very much that info should be in the bbb wiki very helpful and good to know. Especially that a usb device could solve the issue. I take lots of pictures order of thousands and need the space but dont want to goto a power hungry usb disk drive. On Nov 20, 2014 10:15 PM, Robert Nelson robertcnel...@gmail.com wrote: On Thu, Nov 20, 2014 at 10:12 PM, Brian neo...@gmail.com wrote: Maybe the correct question is what does the BBB have? Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible. Is it an SDHC or SDXC? The ip block on the am335x can not handle SDXC, you'll have to use an external usb adapter to use SDXC cards on the bbb. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/rK3y2ih1kig/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Again , Its not about filesystem , its about SD SPEC V3.0 (SDXC) vs SD SPEC V2.0 (SDHC) You can NOT use SDXC card on a SDHC host ,some SD v3.0 CMD will over size in v2.0 This is a hardware spec limited 2014-11-21 20:26 GMT+08:00 Philip Polstra ppols...@gmail.com: Would SDXC work if reformatted to get rid of Microsoft's proprietary exFAT filesystem or is the hardware limited to 32GB? Just curious, haven't needed anything larger than 32. On Nov 21, 2014 7:15 AM, William Hermans yyrk...@gmail.com wrote: So buy a flash memory stick ? Or put a ssd in an external enclosure . . . On Thu, Nov 20, 2014 at 11:22 PM, Brian Heckathorne neo...@gmail.com wrote: Thank you very much that info should be in the bbb wiki very helpful and good to know. Especially that a usb device could solve the issue. I take lots of pictures order of thousands and need the space but dont want to goto a power hungry usb disk drive. On Nov 20, 2014 10:15 PM, Robert Nelson robertcnel...@gmail.com wrote: On Thu, Nov 20, 2014 at 10:12 PM, Brian neo...@gmail.com wrote: Maybe the correct question is what does the BBB have? Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible. Is it an SDHC or SDXC? The ip block on the am335x can not handle SDXC, you'll have to use an external usb adapter to use SDXC cards on the bbb. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/rK3y2ih1kig/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Robert, So am I reading this correctly, and you've got the system to boot off an SDXC card ? Well at least mounting the rootfs from it ? On Fri, Nov 21, 2014 at 8:25 AM, Robert Nelson robertcnel...@gmail.com wrote: On Fri, Nov 21, 2014 at 9:11 AM, Robert Nelson robertcnel...@gmail.com wrote: Humm... So i picked up an SDXC card a few weeks back, but this conversation reminded me i should just test it to prove it for once an and all... Well... debian@beaglebone:~$ uname -r 3.8.13-bone67 debian@beaglebone:~$ dmesg [ 98.159775] mmc0: host does not support reading read-only switch. assuming write-enable. [ 98.161943] mmc0: new high speed SDXC card at address [ 98.165780] mmcblk1: mmc0: SU64G 59.4 GiB [ 98.169334] mmcblk1: p1 [ 172.261473] mmcblk1: p1 [ 277.923870] EXT4-fs (mmcblk1p1): mounted filesystem with ordered data mode. Opts: (null) (mmcblk1 is SDXC) debian@beaglebone:~$ sudo hdparm -tT /dev/mmcblk1 /dev/mmcblk1: Timing cached reads: 448 MB in 2.00 seconds = 224.03 MB/sec Timing buffered disk reads: 58 MB in 3.02 seconds = 19.23 MB/sec (mmcblk0 is eMMC which i booted off of..) debian@beaglebone:~$ sudo hdparm -tT /dev/mmcblk0 /dev/mmcblk0: Timing cached reads: 424 MB in 2.01 seconds = 211.39 MB/sec Timing buffered disk reads: 66 MB in 3.05 seconds = 21.66 MB/sec Well let's see if i can boot off the SDXC card.. Zero'ed out the eMMC: debian@beaglebone:~$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT mmcblk1boot0 179:16 0 1M 1 disk mmcblk1boot1 179:24 0 1M 1 disk mmcblk0 179:00 59.5G 0 disk └─mmcblk0p1 179:10 59.5G 0 part / mmcblk1 179:80 1.8G 0 disk debian@beaglebone:~$ dmesg | grep mmcblk0 [0.870861] mmcblk0: mmc0: SU64G 59.4 GiB [0.872373] mmcblk0: p1 [2.624594] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null) [7.353348] EXT4-fs (mmcblk0p1): re-mounted. Opts: (null) [8.346567] EXT4-fs (mmcblk0p1): re-mounted. Opts: errors=remount-ro [ 25.319932] lun0: LUN: removable file: /dev/mmcblk0p1 This is a: SanDisk Ultra 64GB micro SDXC Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Fri, Nov 21, 2014 at 4:11 PM, William Hermans yyrk...@gmail.com wrote: Robert, So am I reading this correctly, and you've got the system to boot off an SDXC card ? Well at least mounting the rootfs from it ? That is correct, it's been running tests all day. I've been trying to find a good sdxc implementation manual, as i thought they changed the base command set. Unless SanDisk, put their own hardware compatibility layer.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
This is surprise me Can someone do another test like one single file over than 32G ? 2014-11-22 6:36 GMT+08:00 Robert Nelson robertcnel...@gmail.com: On Fri, Nov 21, 2014 at 4:11 PM, William Hermans yyrk...@gmail.com wrote: Robert, So am I reading this correctly, and you've got the system to boot off an SDXC card ? Well at least mounting the rootfs from it ? That is correct, it's been running tests all day. I've been trying to find a good sdxc implementation manual, as i thought they changed the base command set. Unless SanDisk, put their own hardware compatibility layer.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Do SDXC cards work in the BBB? Or is it SDHC cards only? On Monday, July 21, 2014 11:00:35 AM UTC-5, Gerald wrote: And I can confirm this is correct. Gerald On Mon, Jul 21, 2014 at 10:40 AM, Robert Nelson robert...@gmail.com javascript: wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric...@gmail.com javascript: wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Maybe the correct question is what does the BBB have? Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible. Is it an SDHC or SDXC? On Monday, July 21, 2014 11:00:35 AM UTC-5, Gerald wrote: And I can confirm this is correct. Gerald On Mon, Jul 21, 2014 at 10:40 AM, Robert Nelson robert...@gmail.com javascript: wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric...@gmail.com javascript: wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Thu, Nov 20, 2014 at 10:10 PM, Brian neo...@gmail.com wrote: Do SDXC cards work in the BBB? Or is it SDHC cards only? As mentioned in this thread SDXC cares are not supported on the bbb thru the internal mmc interface connected to the microSD slot. microSDHC 32GB is your limit.. If you want SDXC you'll need a usb adapter that supports them. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Thu, Nov 20, 2014 at 10:12 PM, Brian neo...@gmail.com wrote: Maybe the correct question is what does the BBB have? Because SDXC uses a different file system called exFAT and it works differently than standard SD cards, this new format is NOT backwards compatible with host devices that only take SD (128MB to 2GB) or host devices that only take SDHC (4GB to 32GB). Most host devices built after 2010 should be SDXC compatible. Is it an SDHC or SDXC? The ip block on the am335x can not handle SDXC, you'll have to use an external usb adapter to use SDXC cards on the bbb. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Tue, Jul 22, 2014 at 11:25 PM, Eric Fort eric.f...@gmail.com wrote: so that sounds like a software issue not a hardware issue. When I refer to hardware I really mean the electrical signaling on the interface to the host. only thing I can think of there is some subsystem in an soc ends up being too smart for it's own good in trying to handle those commands such that the host never actually sees the commands being sent/received on the interface. cmd length sounds like a linux kernel driver issue. You realize if that soc subsystem wasn't too smart you'd have to use the Cortex A8 to manually batch every mmc cmd/data access. I'm sorry, i'd rather use the cpu cycles for something useful. If you need more then 32GB get a usb flash or usb sata drive. It's way cheaper then any most microSDXC devices. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Its not about software , Its about how hardware implement a stack / spec. You can read this first , to understand how a sdxc stack runs failed on a sdhc host https://www.sdcard.org/downloads/pls/simplified_specs/part1_410.pdf 2014-07-23 12:25 GMT+08:00 Eric Fort eric.f...@gmail.com: so that sounds like a software issue not a hardware issue. When I refer to hardware I really mean the electrical signaling on the interface to the host. only thing I can think of there is some subsystem in an soc ends up being too smart for it's own good in trying to handle those commands such that the host never actually sees the commands being sent/received on the interface. cmd length sounds like a linux kernel driver issue. Eric On Tue, Jul 22, 2014 at 9:14 PM, liyaoshi liyao...@gmail.com wrote: Its about sdhc cmd format ，some sdhc cmd/resp will get different length from sdxc 2014-07-23 11:03 GMT+08:00 Eric Fort eric.f...@gmail.com: so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? Eric On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Robert, Yes, I suppose you have a point, but this does sound like another good use for one of the PRUs. Eric On Wed, Jul 23, 2014 at 4:53 AM, Robert Nelson robertcnel...@gmail.com wrote: On Tue, Jul 22, 2014 at 11:25 PM, Eric Fort eric.f...@gmail.com wrote: so that sounds like a software issue not a hardware issue. When I refer to hardware I really mean the electrical signaling on the interface to the host. only thing I can think of there is some subsystem in an soc ends up being too smart for it's own good in trying to handle those commands such that the host never actually sees the commands being sent/received on the interface. cmd length sounds like a linux kernel driver issue. You realize if that soc subsystem wasn't too smart you'd have to use the Cortex A8 to manually batch every mmc cmd/data access. I'm sorry, i'd rather use the cpu cycles for something useful. If you need more then 32GB get a usb flash or usb sata drive. It's way cheaper then any most microSDXC devices. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
yaoshi, thanks for the link, that pretty well lays it out and gives what I was looking for as to what and why. Eric On Wed, Jul 23, 2014 at 5:33 AM, liyaoshi liyao...@gmail.com wrote: Its not about software , Its about how hardware implement a stack / spec. You can read this first , to understand how a sdxc stack runs failed on a sdhc host https://www.sdcard.org/downloads/pls/simplified_specs/part1_410.pdf 2014-07-23 12:25 GMT+08:00 Eric Fort eric.f...@gmail.com: so that sounds like a software issue not a hardware issue. When I refer to hardware I really mean the electrical signaling on the interface to the host. only thing I can think of there is some subsystem in an soc ends up being too smart for it's own good in trying to handle those commands such that the host never actually sees the commands being sent/received on the interface. cmd length sounds like a linux kernel driver issue. Eric On Tue, Jul 22, 2014 at 9:14 PM, liyaoshi liyao...@gmail.com wrote: Its about sdhc cmd format ，some sdhc cmd/resp will get different length from sdxc 2014-07-23 11:03 GMT+08:00 Eric Fort eric.f...@gmail.com: so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? Eric On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? Eric On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
On Tue, Jul 22, 2014 at 10:03 PM, Eric Fort eric.f...@gmail.com wrote: so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? hardware... http://kb.sandisk.com/app/answers/detail/a_id/2520/~/sd%2Fsdhc%2Fsdxc-specifications-and-compatibility Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
Its about sdhc cmd format ，some sdhc cmd/resp will get different length from sdxc 2014-07-23 11:03 GMT+08:00 Eric Fort eric.f...@gmail.com: so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? Eric On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
so that sounds like a software issue not a hardware issue. When I refer to hardware I really mean the electrical signaling on the interface to the host. only thing I can think of there is some subsystem in an soc ends up being too smart for it's own good in trying to handle those commands such that the host never actually sees the commands being sent/received on the interface. cmd length sounds like a linux kernel driver issue. Eric On Tue, Jul 22, 2014 at 9:14 PM, liyaoshi liyao...@gmail.com wrote: Its about sdhc cmd format ，some sdhc cmd/resp will get different length from sdxc 2014-07-23 11:03 GMT+08:00 Eric Fort eric.f...@gmail.com: so one is completely unable to reformat an SDXC card with another filesystem type such as ext3? Is it simply a filesystem issue or are there hardware differences to be overcome? Eric On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? Eric On Mon, Jul 21, 2014 at 1:52 AM, liyaoshi liyao...@gmail.com wrote: As I understand , its not about the size , its about the eMMC spec support , While sdhc up to support 32G card , the new spec call sdxc ? this will support up to 2T , but this is not support by ti omap3/dm81xx/am335x ,only support by omap5 So , when you see a card with sdxc trademark. it should NOT support by beagle .even its less than 32G 2014-07-19 7:09 GMT+08:00 Eric Fort eric.f...@gmail.com: I'm using a 32GB SD card, so yes it works. Has anyone tried 64GB and larger cards yet? 64 or 128GB would be insanely nice! Eric On Fri, Jul 18, 2014 at 12:04 PM, William Hermans yyrk...@gmail.com wrote: We use two BBB's here, and both use 16GB class 10 cards. I've heard that 32GB works too, but no hands on. AS john said first you want more space( unused, or free space ) on your sd card to help facilitate wear leveling, *AND* if you're going to be doing lots of writing for development purposes. Move your rootfs to an NFS share. On Fri, Jul 18, 2014 at 3:05 AM, William Pretty Security bill.pre...@xplornet.com wrote: Thanks John J http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto: beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 11:48 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 7:58 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Actually John, I've been having that exact problem ! How does 'wear leveling' work ? I have been using an external USB key as temp storage. http://en.wikipedia.org/wiki/Wear_leveling For development purposes, don't use SDCards. Rather use NFS to mount a rootfs on your desktop. In the field, use a read only rootfs and create a separate partition for storage. Flash has to erase a block before writing a byte. If you have a logging application, create a buffer in ram which is the size of your flash erase block and write data to buffer and only write the buffer to disk when the buffer is full. Alternatively, use a power fail detection circuitry and only write to SDCard on power failure. There are a lot of techniques like this that prolong the life of flash. Regards, John Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [ mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 10:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 6:51 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn't the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [ mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 8:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 4:14 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don't know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren't very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [ mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *Sent:* Thursday, July 17, 2014 6:05 PM *To:* beagleboard@googlegroups.com *Subject:* [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC
Re: [beagleboard] Maximum SD card size for BBB
On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
And I can confirm this is correct. Gerald On Mon, Jul 21, 2014 at 10:40 AM, Robert Nelson robertcnel...@gmail.com wrote: On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort eric.f...@gmail.com wrote: so can someone link to something definitive stating that for the beagle bone (black) 32GB SDHC is the biggest card supported (assuming this is correct)? From: http://en.wikipedia.org/wiki/Secure_Digital#SDXC The Secure Digital eXtended Capacity (SDXC) format, announced in January 2009 and defined in Version 3.01 of the SD specification, supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT file system as a mandatory feature. aka: microSDHC 32GB is your limit.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [beagleboard] Maximum SD card size for BBB
Thanks John J http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 11:48 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 7:58 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Actually John, I've been having that exact problem ! How does 'wear leveling' work ? I have been using an external USB key as temp storage. http://en.wikipedia.org/wiki/Wear_leveling For development purposes, don't use SDCards. Rather use NFS to mount a rootfs on your desktop. In the field, use a read only rootfs and create a separate partition for storage. Flash has to erase a block before writing a byte. If you have a logging application, create a buffer in ram which is the size of your flash erase block and write data to buffer and only write the buffer to disk when the buffer is full. Alternatively, use a power fail detection circuitry and only write to SDCard on power failure. There are a lot of techniques like this that prolong the life of flash. Regards, John Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 10:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 6:51 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn't the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 8:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 4:14 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don't know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren't very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. _ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7863 - Release Date: 07/16/14 No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7871 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving
Re: [beagleboard] Maximum SD card size for BBB
We use two BBB's here, and both use 16GB class 10 cards. I've heard that 32GB works too, but no hands on. AS john said first you want more space( unused, or free space ) on your sd card to help facilitate wear leveling, *AND* if you're going to be doing lots of writing for development purposes. Move your rootfs to an NFS share. On Fri, Jul 18, 2014 at 3:05 AM, William Pretty Security bill.pre...@xplornet.com wrote: Thanks John J http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 11:48 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 7:58 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Actually John, I’ve been having that exact problem ! How does ‘wear leveling’ work ? I have been using an external USB key as temp storage. http://en.wikipedia.org/wiki/Wear_leveling For development purposes, don’t use SDCards. Rather use NFS to mount a rootfs on your desktop. In the field, use a read only rootfs and create a separate partition for storage. Flash has to erase a block before writing a byte. If you have a logging application, create a buffer in ram which is the size of your flash erase block and write data to buffer and only write the buffer to disk when the buffer is full. Alternatively, use a power fail detection circuitry and only write to SDCard on power failure. There are a lot of techniques like this that prolong the life of flash. Regards, John Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 10:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 6:51 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn’t the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 8:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 4:14 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don’t know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren’t very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *Sent:* Thursday, July 17, 2014 6:05 PM *To:* beagleboard@googlegroups.com *Subject:* [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop
Re: [beagleboard] Maximum SD card size for BBB
I'm using a 32GB SD card, so yes it works. Has anyone tried 64GB and larger cards yet? 64 or 128GB would be insanely nice! Eric On Fri, Jul 18, 2014 at 12:04 PM, William Hermans yyrk...@gmail.com wrote: We use two BBB's here, and both use 16GB class 10 cards. I've heard that 32GB works too, but no hands on. AS john said first you want more space( unused, or free space ) on your sd card to help facilitate wear leveling, *AND* if you're going to be doing lots of writing for development purposes. Move your rootfs to an NFS share. On Fri, Jul 18, 2014 at 3:05 AM, William Pretty Security bill.pre...@xplornet.com wrote: Thanks John J http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 11:48 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 7:58 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Actually John, I've been having that exact problem ! How does 'wear leveling' work ? I have been using an external USB key as temp storage. http://en.wikipedia.org/wiki/Wear_leveling For development purposes, don't use SDCards. Rather use NFS to mount a rootfs on your desktop. In the field, use a read only rootfs and create a separate partition for storage. Flash has to erase a block before writing a byte. If you have a logging application, create a buffer in ram which is the size of your flash erase block and write data to buffer and only write the buffer to disk when the buffer is full. Alternatively, use a power fail detection circuitry and only write to SDCard on power failure. There are a lot of techniques like this that prolong the life of flash. Regards, John Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 10:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 6:51 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn't the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *On Behalf Of *John Syn *Sent:* Thursday, July 17, 2014 8:32 PM *To:* beagleboard@googlegroups.com *Subject:* Re: [beagleboard] Maximum SD card size for BBB *From: *William Pretty Security bill.pre...@xplornet.com *Reply-To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Date: *Thursday, July 17, 2014 at 4:14 PM *To: *beagleboard@googlegroups.com beagleboard@googlegroups.com *Subject: *RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don't know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren't very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com beagleboard@googlegroups.com] *Sent:* Thursday, July 17, 2014 6:05 PM *To:* beagleboard@googlegroups.com *Subject:* [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release
Re: [beagleboard] Maximum SD card size for BBB
On Thu, Jul 17, 2014 at 5:05 PM, 'Jonmar' via BeagleBoard beagleboard@googlegroups.com wrote: Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? From the AM335x manual: MMC, SD, SDIO 2.0 port: Complies with MMC4.3, SD, SDIO 2.0 Specifications Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [beagleboard] Maximum SD card size for BBB
You probably want about 8GB class 10 for sure. I don’t know if there is a maximum size of uSD card. The class 4 uSD cards aren’t very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 4:14 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don¹t know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren¹t very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Maximum SD card size for BBB
From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 6:51 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn¹t the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 8:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 4:14 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don¹t know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren¹t very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7863 - Release Date: 07/16/14 No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7871 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [beagleboard] Maximum SD card size for BBB
Actually John, I've been having that exact problem ! How does 'wear leveling' work ? I have been using an external USB key as temp storage. Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 10:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 6:51 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn't the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 8:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 4:14 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don't know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren't very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. _ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7863 - Release Date: 07/16/14 No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7871 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. _ No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7863 - Release Date: 07/16/14 No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7871 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group
Re: [beagleboard] Maximum SD card size for BBB
From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 7:58 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Actually John, I¹ve been having that exact problem ! How does OEwear leveling¹ work ? I have been using an external USB key as temp storage. http://en.wikipedia.org/wiki/Wear_leveling For development purposes, don¹t use SDCards. Rather use NFS to mount a rootfs on your desktop. In the field, use a read only rootfs and create a separate partition for storage. Flash has to erase a block before writing a byte. If you have a logging application, create a buffer in ram which is the size of your flash erase block and write data to buffer and only write the buffer to disk when the buffer is full. Alternatively, use a power fail detection circuitry and only write to SDCard on power failure. There are a lot of techniques like this that prolong the life of flash. Regards, John Bill http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 10:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 6:51 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB Quite right, but given that Ubuntu with GUI is about 3GB, isn¹t the other 13 kind of a waste ?? Flash has a finite number of writes so with wear leveling, you want to have a much free space as possible to prevent flash failure. If it is the same price, always get the bigger one ;-) Regards, John http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of John Syn Sent: Thursday, July 17, 2014 8:32 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] Maximum SD card size for BBB From: William Pretty Security bill.pre...@xplornet.com Reply-To: beagleboard@googlegroups.com beagleboard@googlegroups.com Date: Thursday, July 17, 2014 at 4:14 PM To: beagleboard@googlegroups.com beagleboard@googlegroups.com Subject: RE: [beagleboard] Maximum SD card size for BBB You probably want about 8GB class 10 for sure. I don¹t know if there is a maximum size of uSD card. 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8. The class 4 uSD cards aren¹t very reliable. http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] Sent: Thursday, July 17, 2014 6:05 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Maximum SD card size for BBB Greetings everyone, What is the maximum size SD or SDHC flash memory card that the BeagleBone Black will support ? Also, what is the recommended speed class (e.g. Class 4, Class 10, etc.) ? Thank you in advance for your help :-) Jonmar -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7869 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7863 - Release Date: 07/16/14 No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4716 / Virus Database: 3986/7871 - Release Date: 07/17/14 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org
