I played around with sd on my RPi after I got things going with the USB flash. After dd copying the same image to the sd card, booting the pi successfully, and killing power, I never got a successful second boot. I would have to mount the sd card on my laptop and copy over the /boot partition each time before it would boot again. I was unimpressed. The BBB may have better protection from glitching the sd card during power fail, but I had troubles from the RPi 1 to the RPi 3B+.
I'll stick with the usb drives that stick out of the socket less than 1/4" and cost the same as an sd card. -- Ralph ________________________________________ From: Jon Elson [el...@pico-systems.com] Sent: Wednesday, January 13, 2021 8:30 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Rpi 3b+ to 7i90hd On 01/12/2021 10:48 PM, Thaddeus Waldner wrote: > I’m wondering what you plan to use for flash memory on the Pi. Is the SD card > a viable solution in this application? Would the Pi compute module with > onboard flash memory be a workable solution? > > One issue with onboard flash memory is that swapping out a pi in the case of > a processor failure would be more difficult. Is there anything else that > makes the compute modules a worse choice than the standard pi? > I've used the SD as the main "disk" storage on a Beagle Bone for years. The advantage is you can pull it out, put it in a USB card reader and transfer files. Mostly I use that to initially load the OS, LinuxCNC (Machinekit fork) and etc., and once it is on the network that isn't needed again. Modern SD cards just work fine, and especially if you set a couple options like noatime in the file system, they are quite robust. Jon _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7Cb5fd931ac27c4fb378b008d8b7e0ad66%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637461522916963401%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=nqqqOV1P6xVwgC0agk3HitsmhgKNZwxZRPdpzdV9UWs%3D&reserved=0 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
