if you are not able to make the mounts like described above try it like when using a Live-CD:
# sudo mount -o bind /dev /mnt/dev # sudo mount -o bind /sys /mnt/sys # sudo mount -t proc /proc /mnt/proc # sudo cp /mnt/proc/mounts /mnt/etc/mtab # sudo chroot /mnt /bin/bash
see also: http://wiki.ubuntuusers.de/chroot/Live-CD
hopefully you might recover things now...
if you are not able to make the mounts like described above try it like when using a Live-CD:
# sudo mount -o bind /dev /mnt/dev
# sudo mount -o bind /sys /mnt/sys
# sudo mount -t proc /proc /mnt/proc
# sudo cp /mnt/proc/mounts /mnt/etc/mtab
# sudo chroot /mnt /bin/bash
see also: http:// wiki.ubuntuuser s.de/chroot/ Live-CD
hopefully you might recover things now...