Hi Terry, > My main PC (Dell Optiplex 790) seems to have suffered a fairly major > boot problem. I have uploaded some screenshots to > https://www.hadrian-way.co.uk/Misc/ so that you can see what is going on: > > * At first boot, I get the display shown at MG20251214070339.jpg > (Purple screen with Kernel Panic and other info). > * If I reboot, I get the boot choice display, with an option to go to > Advanced Options, see MG20251214084417.jpg. Here I can get various > results: > o I can hit select the current kernel which gives me the screen as > above or:
> o I can select the current kernel (recovery mode). That gives me > MG20251214070056.jpg Given the error message in https://www.hadrian-way.co.uk/Misc/IMG20251214070056.jpg I found https://dev.to/dm8ry/fixing-the-kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block00-error-3ado and https://askubuntu.com/questions/41930/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block0-0 which both give the same diagnosis with a suggested fix. Though I don't recall enough off the top of my head to vet the fix. > but the SMART report on the two discs show nothing untoward (see > reports in the above location). I see: https://www.hadrian-way.co.uk/Misc/SDA1_SMART_Report.htm 234 Unrecoverable ECC Count 539 sectors https://www.hadrian-way.co.uk/Misc/SDA2_SMART_Report.htm 234 Unrecoverable ECC Count 52,934 sectors The second looks high to me. Of particular interest would be the rate of change, but you'd need a history of results to grep those out. I like Tim's suggestion: boot from another media, and run checks on the two drives. Also, filesystems like ext4 can have a ‘run fsck every N mounts’ setting. That's often set quite high. If you don't mind slowing down booting, it can be tuned lower so problems are spotted sooner when they may need just a stich in time. See tune2fs(8)'s -c and -C. -- Cheers, Ralph. -- Next meeting: Online, Jitsi, Tuesday, 2026-01-06 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... https://dorset.lug.org.uk New thread, don't hijack: mailto:[email protected]
