facendo cat /proc/mounts, compaiono diversi due dispositivi che non
compaiono in /etc/mtab
$ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/root / ext3 rw,errors=remount-ro,data=orde red 0 0
[...]
in compenso in /etc/mtab compare una riga fasulla
$ cat /etc/mtab
/dev/hda1 / ext3 rw,errors=remount-ro 0 0