mataglap:/empeg/bin# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/root              15M   11M  4.4M  72% /
/dev/hda2              34M   19M   13M  59% /programs0
/dev/hdc2              15M   11M  4.4M  72% /programs1
/dev/hda4              74G   58G   16G  78% /drive0
/dev/hdc4              15M   11M  4.4M  72% /drive1
/dev/hdc5              15M   11M  4.4M  72% /root1
mataglap:/empeg/bin# ro          
mataglap:/empeg/bin# rom
mataglap:/empeg/bin# umount /drive0
mataglap:/empeg/bin# cat /proc/mounts
/dev/root / ext2 ro 0 0
/dev/hda2 /programs0 ext2 ro 0 0
none /proc proc rw 0 0
mataglap:/empeg/bin# time 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
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/hda4: 43863/610304 files (2.4% non-contiguous), 15265873/19510942 blocks

real    5m30.844s
user    0m40.230s
sys     0m30.470s
mataglap:/empeg/bin#