this is a standard installation of Fedora: LVM???
If its LVM that might complicate things.
And how do I run fsck from another PC (that is here..)??
Urm... Just connect the disk to a working linux box. When you do that it will become available as one of the nodes under /dev/ (something like /dev/hdb1 /dev/sda1 etc. exactly what depends on the machine. running dmesg after pluging it in might tell you what).
once you have identified what it is, just run > fsck /dev/XXXX Chris
How do I run fsck from the single box??? ifI issue only fsck from shell I get the warning that /etc/fstab cannot be open