Re: Bad superblock [solved]
Well, using e2fsck could not work since the primary superblock is
damaged hand hence not writable. Instead, debugfs came to my rescue.
It allows to enter the blocksize and the superblock to be used for
filesystem to debug, and one can enter an interactive session or let run
a script. Phantastic!
Using ls as usual in the (comfortable) shell to locate the files to
rdump directory destination
to make a dump of the data solved the problem.
Incidentially, running the whole thing from a Knoppix-CD was not a bad
idea eiter: not being dependent of the possibly damaged files und being
capable to copy the data into the ramdisk and from there to another
computer via ssh was rather comfortable.