tail /boot/grub/device.map
(fd0)     /dev/fd0
#(hd0)     /dev/hda
#(hd1)     /dev/hdb
(hd0)     /dev/hdb
(hd1)     /dev/sda


tail /boot/grub/menu.lst


 WinXP
  rootnoverify (hd1,0)
  chainloader +1