Booter win xp après install mandriva

fdisk -l
cat /boot/grub/menu.list

# menu.lst - See: grub(8), info grub, update-grub(8)
#            grub-install(8), grub-floppy(8),
#            grub-md5-crypt, /usr/share/doc/grub
#            and /usr/share/doc/grub-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not change this entry to 'saved' or your
# array will desync and will not let you boot your system.
default     0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout     5

# Pretty colours
color cyan/blue white/blue

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs
title       Debian GNU/Linux, kernel 2.6.24-1-686
root        (hd0,1)
kernel      /boot/vmlinuz-2.6.24-1-686 root=/dev/hda2 ro
initrd      /boot/initrd.img-2.6.24-1-686

title       Debian GNU/Linux, kernel 2.6.24-1-686 (single-user mode)
root        (hd0,1)
kernel      /boot/vmlinuz-2.6.24-1-686 root=/dev/hda2 ro single
initrd      /boot/initrd.img-2.6.24-1-686

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title       Other operating systems:
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/hda1
title       Microsoft Windows XP Professionnel
root        (hd0,0)
savedefault
makeactive
chainloader +1