Slack 12.2 -borked superblock on /dev/hda8

the_penguinator · 01-05-2010, 10:51 AM

/dev/hda8 is /home on this laptop. It must have been reading/writing when the battery died and now /home won't mount. I get the "is this a zero length partition?" error when running e2fsck. I've searched a bit and have gotten *mount -o sb=n /dev/hda8 /home* as a potential solution but I'm confused about the value 'n' suggested. When run as I wrote it, it fails with a 'no such partition' error. Can anyone point me to a solution for re-creating the superblock to get this partition mountable again?

ozanbaba · 01-05-2010, 12:15 PM

hmmm
some superblock back-up maybe: http://en.opensuse.org/Disk_repair_a...te_superblocks

check the information about e2fsck -b

the_penguinator · 01-05-2010, 02:45 PM

Quote:

Originally Posted by ozanbaba

hmmm
some superblock back-up maybe: http://en.opensuse.org/Disk_repair_a...te_superblocks

check the information about e2fsck -b

thanks, used mkfs to find the backup superblocks and did
fsck.ext3 -b 32768 /dev/hda8
It ran for a few minutes before coughing up a similar "short read" error as the original

the hunt continues

DonnieP · 01-06-2010, 08:27 AM

Would the testdisk program help?

the_penguinator · 01-06-2010, 09:28 AM

Quote:

Originally Posted by DonnieP

Would the testdisk program help?

Thanks
I tried to run it off an Ubuntu 9.10 disk and the machine hung hard...had to reset and start over. Have just finished running through all of the superblock backups i.e.,fsck.ext3 -b XXXXXXXX /dev/hda8 and it returns a short read error at the same block number with each attempt. I'm going to try to dd the partition to another machine in the subnet and see if I can get the data off.