[/quote]Shouldn't that be: fsck -l bad-blocks /dev/mapper/vg_computer-lv_root I think your shell redirection would clear the badblocks list in preparation for writing to it, so you'd empty the file before fsck could apply it. If I am making a mistake, or there is a better way to do this, then I would greatly appreciate any advise. I might have run fsck with the -c option, which gets passed through to e2fsck. This combines both operations - it runs badblocks internally, applies anything it finds to the badblocks list and then (presumably) checks the filing structure. Martin[/quote] That was a typo. Ok... thanks for the tip about -c I will definitely do that. I interrupted the badblock run anyway because I needed to back up stuff.