On my personal home computer running Kubuntu Linux 13.04 I'm having trouble mounting a partition that is very dear to me. My backup policy is to perform a backup about monthly, so I do have a backup from August :). Is there any way to recover the personal files that are on this drive?
The drive is a 1.5 year old 1000 GiB Western Digital Green drive, with home mounted on
/dev/sdc2, the filesystem root on
/dev/sdc6, and media files on
/dev/sdc3. Therefore of course
sdc2 would be the one to go! So far as I know there were no power outages or other such events during the life of the drive. I managed to get this information by running a Kubuntu LiveCD:
kubuntu@kubuntu:~$ sudo fdisk -l Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00008044 Device Boot Start End Blocks Id System /dev/sdc1 * 4094 88066047 44030977 5 Extended /dev/sdc2 88066048 1419266047 665600000 83 Linux /dev/sdc3 1419266048 1953523711 267128832 83 Linux /dev/sdc5 4096 6146047 3070976 82 Linux swap / Solaris /dev/sdc6 6148096 47106047 20478976 83 Linux /dev/sdc7 47108096 88066047 20478976 83 Linux kubuntu@kubuntu:~$ sudo mount -t ext4 /dev/sdc2 c1 mount: wrong fs type, bad option, bad superblock on /dev/sdc2, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so kubuntu@kubuntu:~$ sudo debugfs -c /dev/sdc2 debugfs 1.42.5 (29-Jul-2012) /dev/sdc2: Attempt to read block from filesystem resulted in short read while opening filesystem debugfs: quit kubuntu@kubuntu:~$ sudo fsck /dev/sdc2 fsck from util-linux 2.20.1 e2fsck 1.42.5 (29-Jul-2012) fsck.ext4: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdc2 Could this be a zero-length partition? kubuntu@kubuntu:~$ sudo fsck.ext4 -v /dev/sdc2 e2fsck 1.42.5 (29-Jul-2012) fsck.ext4: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdc2 Could this be a zero-length partition? kubuntu@kubuntu:~$ dmesg | tail [ 2684.532855] Descriptor sense data with sense descriptors (in hex): [ 2684.532858] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 [ 2684.532876] 05 3f c8 b0 [ 2684.532885] sd 5:0:0:0: [sdc] [ 2684.532893] Add. Sense: Unrecovered read error - auto reallocate failed [ 2684.532898] sd 5:0:0:0: [sdc] CDB: [ 2684.532902] Read(10): 28 00 05 3f c8 b0 00 00 08 00 [ 2684.532917] end_request: I/O error, dev sdc, sector 88066224 [ 2684.532927] Buffer I/O error on device sdc2, logical block 22 [ 2684.532973] ata6: EH complete
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