Hi there,
seems like you always entered 'unmount' instead of 'umount' ... !

Just do it like it's in the FAQ:

ro
umount /dev/hda4
umount /dev/hdc4
swapon /swapfile
fsck -fay /
fsck -fay /dev/hda4
fsck -fay /dev/hdc4
swapoff /swapfile
sync

...and you should always wait for the shell-prompt to reappear, before entering the next command.
Up there you entered rwm and didn't wait for the process to finish before entering the next commands...rwm always takes a while...

Cheers,
Ken