In reply to:

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empeg:/empeg/bin# swapon /swapfile
Adding Swap: 16596k swap-space (priority -1)
empeg:/empeg/bin# umount /drive0
umount: /drive0: not mounted
empeg:/empeg/bin# fsck -fay /
Parallelizing fsck version 1.19 (13-Jul-2000)
e2fsck 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09
ext2fs_check_if_mount: No such file or directory while determining whether /dev/
hda5 is mounted.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/hda5: 1510/4096 files (0.5% non-contiguous), 9427/16384 blocks
empeg:/empeg/bin# fsck -fay /dev/hda4
Parallelizing fsck version 1.19 (13-Jul-2000)
e2fsck 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09
ext2fs_check_if_mount: No such file or directory while determining whether /dev/
hda4 is mounted.
Group descriptors look bad... trying backup blocks...
fsck.ext2: Bad magic number in super-block while trying to open /dev/hda4

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 alternate superblock:
e2fsck -b 8193 <device>

empeg:/empeg/bin# swapoff
usage: swapoff [-hV]
swapoff -a [-v]
swapoff [-v] [-p priority] special ...
swapoff [-s]

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