What can I do with this error

Question

What can I do with this error

emmtte opened this issue 6 years ago · comments

[-] RCA not found. Make sure /sys/ is mounted. Run this program only on the main volume, eg. /dev/mmcblk0

Bertold Van den Bergh · Answer 1 · Mon Jan 21 2019 02:57:52 GMT+0800 (China Standard Time)

Hello,

Could you provide a bit more information?

Could you post the output of:
ls -la /sys/bus/mmc/devices/

Sincerely,
Bertold

emmtte · Answer 2 · Mon Jan 21 2019 03:55:07 GMT+0800 (China Standard Time)

ls -la /sys/bus/mmc/devices/
total 0
drwxr-xr-x 2 root root 0 Jan 20 20:54 .
drwxr-xr-x 4 root root 0 Jan  1  1970 ..
lrwxrwxrwx 1 root root 0 Dec 29 11:37 mmc0:e624 -> ../../../devices/platform/soc/20202000.mmc/mmc_host/mmc0/mmc0:e624

Bertold Van den Bergh · Answer 3 · Mon Jul 20 2020 19:09:29 GMT+0800 (China Standard Time)

This looks ok to me. Can you give me access to this system?

FatBirdie · Answer 4 · Fri Jan 15 2021 04:19:48 GMT+0800 (China Standard Time)

I have the same problem.
Installed Armbian to an microsd, used 'lock' to lock the card. The system wouldn't boot, requires fsck to continue, which it wont perform for some reason. Plug the microsd back into my main computer, try to unlock it and get:
[-] RCA not found. Make sure /sys/ is mounted. Run this program only on the main volume, eg. /dev/mmcblk0

I have nothing in my devices/ dir:
ls -la /sys/bus/mmc/devices/
total 0
drwxr-xr-x 2 root root 0 Jan 14 21:16 .
drwxr-xr-x 4 root root 0 Jan 14 21:13 ..

I can't mount the card anymore, the system just complains that its read-only and spits out an error. I can't format the card due to it being read-only. gnome-disks, cfdisk, its all the same.

Is the card screwed, or is there anything that can be done?

emmtte · Answer 5 · Thu Mar 25 2021 05:43:06 GMT+0800 (China Standard Time)

working now, thanks for this great tools