I'm trying to recover from a system disk corruption issue without having to reinstall the OS, which would be super-painful currently.
I'm using Ubuntu 18.04, the affected partition is ext4 and on a SSD disk.
- Root partition gets remounted read-only after some error.
df -hshows a huge partition (ZB) instead of the 800GB it should be.
- Boot with a live USB.
- Repair partition with
fsck -v. Fixed some errors (orphaned inode and size is xxx should be 0).
- Mount the partition, looks fine. Can navigate, edit files, everything seems to be there and looking good.
- Reboot, the partition is now unbootable. I get the grub console, I can't
grub> lsthe partition; error is "error: unknown filesystem.". I get the same error from the live USB with "grub-mount /dev/sdb2 /mnt"
- I try to repair using Boot Repair. Unsuccessful, but now I have this log with a report.
Any ideas? To me the inconsistency between successfully mounting the partition with mount and unsuccessfully with grub-mount seems really strange. I guess if I could fix this I would be able to boot normally again.
Thank you a lot.