crash and file restore

shroder300 · 09-08-2008, 06:42 PM

I have 12.1 and I tried installing marine sniper in wine. I hung. so I did alt-f2 and shutdown the system. uppon reboot I got an error:

Code:

Couldn't find ext2 superblock, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/sdb

The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

I tried that with no luck. I then used sysrescuecd and fund a block at 32768. It looked like it fixed a lot of things. but still no luck.

I then installed an old image backup (8/24) and that booted fine. I have a backup of the crashed system. I can read the file system just fine. Is there a way that I can used the old backup to just repair the superblock?

keefaz · 09-08-2008, 07:38 PM

If you can read the file system, why not use rsync to update the old backup with the backup of the crashed system ?

shroder300 · 09-08-2008, 07:42 PM

currently I have the old backup installed. to rsync will I have to install the chrashed system to a partition?

keefaz · 09-08-2008, 08:03 PM

Your backup file is in your external drive ?
Maybe you don't need a partition, just a mount point like /mnt/hd
I don't know if your image file can be mounted or not, should be though
Better do the rsync from a Live CD