noir@chobit:~$ df --si
Filesystem             Size   Used  Avail Use% Mounted on
/dev/mapper/nvidia_djaahief1
                        20G   6.8G    12G  37% /
varrun                 1.1G   271k   1.1G   1% /var/run
varlock                1.1G      0   1.1G   0% /var/lock
procbususb             1.1G   103k   1.1G   1% /proc/bus/usb
udev                   1.1G   103k   1.1G   1% /dev
devshm                 1.1G      0   1.1G   0% /dev/shm
lrm                    1.1G    27M   1.1G   3% /lib/modules/2.6.20-11-generic/volatile
/dev/mapper/nvidia_djaahief3
                       609G   341G   238G  59% /home
/dev/hda               639M   639M      0 100% /media/cdrom