tune2fs -c 1000
rid stop
reboot
# into 2.4 or 2.6?
#at reboot in grub: single user mode
		   mount -o ro,remount /dev/sda1 

e2fsck -c -y /dev/sda1

# this takes a few hours.
# what if something is wrong?

reboot

#single user again

rsync -va --exclude /vol --exclude /proc --exclude /sys / /vol

grub-install --directory /vol/boot/grub /dev/sdb

#edit /vol/etc/fstab putting the right device for the swap, but how?

reboot 

# normal user