avevo gia' provato... comunque

fausto@darkstar:~$ df -ha
Filesystem Size Used Avail Use% Mounted on
/dev/hdc5 4.9G 4.4G 543M 90% /
/dev/hdc7 24G 20G 4.0G 83% /home
/dev/hdc1 1.8G 1.3G 529M 71% /win
/dev/hdc2 30G 24G 6.5G 79% /windows
devpts 0 0 0 - /dev/pts
proc 0 0 0 - /proc
none 0 0 0 - /sys
usbfs 0 0 0 - /proc/bus/usb
e' proprio che vede /dev/hdc2 con 15 giga in meno!