Hi pantera1989,

your quick response is very much appreciated!

Since I don't have the data cable with me, I've tried the X Terminal commands that you listed and my result was:

fsck.ext2: No such file or directory while trying to open /dev/mmc/blk0p1

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 alterna
te superblock:
e2fsck –b 8193 <device>

Nokia-N900-51-1:~#

What should I run now? As I don't want to mess it up more than I did already...