> I was able to mount the card without knowing the type, apparently mount is > smart enough to determine on its own. Does this mean that despite this > capability, each /etc/fstab entry requires full type&option specification?
Yet, you specified the partition number. >> /uEnv.txt is just for backwards compatibility with older eMMC images. > > > This confused me (the image on the SD card is a new version, how can > backwards compatibility be needed?) Not arguing, as you certainly are > correct. Can a system running an older version from eMMC be used to boot > from the SD card, requiring a read of the older format uEnv.txt? I'm just > grasping for an explanation with this. Well, the am335x bootrom reads the eMMC first on poweron. Thus for older versions of U-Boot in eMMC, the backwards compatibility is needed. >> > 3) If I understand correctly there is another FAT volume on the eMMC as >> > shipped, that is seen as a remote (FAT?) volume when the BBB is >> > connected as >> > a USB client. Is there any way to mount that for access from the bone >> > directly? >> >> It's a raw image file, /var/local/*.img >> > Thanks for this (partial) answer (not sarcasm here). It required that I do > some research to fully understand your response, so I learned even more. I > had assumed it was a separate partition on the SD card, exposed by the USB > client. It use to be it's own partition, but this led to other user issues, so it was moved to an *.img file. That file is also maintained by an apt package, so updates can be pushed. > Now I see that there is only one partition on the SD card, and these > "file systems" presented by the USB interface are just image files, which > themselves can be mounted (if you know the magic, i.e. starting sector). I > never tried to modify this content when accessed through USB - I didn't > realize it is read-only. (please correct me if any of this is wrong) or just use losetup/kpartk: #find free loop device sudo losetup -f /dev/loop0 sudo losetup /dev/loop0 beaglebone-getting-started-2017-01-25.img sudo kpartx -av /dev/loop0 sudo mkdir disk sudo mount /dev/mapper/loop0p1 disk/ cd disk/ ls -lh total 90K drwxr-xr-x 2 root root 2.0K Feb 14 15:50 App -rwxr-xr-x 1 root root 288 Feb 14 15:50 autorun.inf drwxr-xr-x 4 root root 2.0K Feb 14 15:50 Docs drwxr-xr-x 5 root root 2.0K Feb 14 15:50 Drivers -rwxr-xr-x 1 root root 41K Feb 14 15:50 LICENSE.txt -rwxr-xr-x 1 root root 17K Feb 14 15:50 README.htm -rwxr-xr-x 1 root root 428 Feb 14 15:50 README.md drwxr-xr-x 2 root root 2.0K Feb 14 15:50 scripts -rwxr-xr-x 1 root root 17K Feb 14 15:50 START.htm Regards, -- Robert Nelson https://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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYh-unngZ4JpB5MQnF8d2xutAv8AvhKpsiBsdL73VD5ttA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
