That is one possibility, could be also some other component malfunctioning.
To really investigate it would require
As for the rescue shell and checking on the eMMC there is this thread https://forum.test.turris.cz/t/emmc-is-broken/8153 that might provide some help, basically:
- check the eMMC partition table with what the
fdisk
tool provides - try formatting the OS partition with
mkfs.btrfs -f /dev/mmcblk0p1
- use the
btrfs
tool (if available) to check the filesystem - there might also the
mmc
tool available
Another way to go about, if the issue is caused by the eMMC, is to deploy the OS from
As far as I know