gentoo home # mount
/dev/hda8 on / type reiserfs (rw,noatime,notail)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec)
udev on /dev type tmpfs (rw,nosuid)
devpts on /dev/pts type devpts (rw,nosuid,noexec)
/dev/hda1 on /usr type reiserfs (rw,noatime,notail)
none on /dev/shm type tmpfs (rw)
/dev/hda5 on /var type reiserfs (rw,notail)
/dev/hda9 on /home type reiserfs (rw)
usbfs on /proc/bus/usb type usbfs (rw,noexec,nosuid,devmode=0664,devgid=85)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
/dev/hda6 on / type ext3 (rw)
gentoo home # umount /dev/hda6
umount: /: device is busy
umount: /: device is busy