Bad Superblock (Mount killed)

Mount will sometimes fail with the somewhat cryptic error message -- killed. This can be an indication of a bad superblock.

Fortunately Linux stores backup copies at 8193, 32768, 98304, 163840, 229376 and 294912. ( 8193 in many cases only on older systems, 32768 is the most current position for the first backup ).

You can view this info by running.

To fix run e2fsck -b 32768 /dev/sdb1

if this doesn't work you can try 98304 and so on.

This can recover hard drives that are not accessible by other means.