If Bionicpup64 is left unattended long enough, I get an irrecoverable scrolling error message as below
The main phrases seem to be:-
ext4-fs i/o error while writing superblock
loop byte error at offset
https://imghost.org/image/3gNm
This is a frugal install to USB. I am not worried about data loss as my puppy is more like a terminal/client and I have disk images of the USB
There is a veracrypt volume on the USB key which I believe is ext4 formatted but I don't know how to check if it corresponds to the dm-0 logical device mentioned in the error
I couldn't make out much from Googling the error messages - some users have posted that i/o errors indicate a failing hard disk, but it's been doing this for months with no other noticeable problems.