problemas con grub y xp

Instale ubuntu en la partician hda1 ya teniendo instalado el win xp en otra particion y ahora no puedo entrar al xp

Entra al grub y me permite perfectamente entrar a linux, pero me da error 12 cuando quiero iniciar el win

La maquina es un sepron 2200+ com mother asus.

paso informacion sobre las particiones

# fdisk -l /dev/hda

Disk /dev/hda: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 1 936 7518388+ 83 Linux
/dev/hda2 937 1873 7526452+ f W95 Ext'd (LBA)
/dev/hda3 * 1874 4865 24033240 c W95 FAT32 (LBA)
/dev/hda5 1002 1873 7004308+ b W95 FAT32
/dev/hda6 937 1001 522049+ 83 Linux

Partition table entries are not in disk order

(montando el /dev/hda5 estan los archivos de win xp..)

y este es el contenido de /boot/grub/menu.lst

# 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'.
default 0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3

## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu

# Pretty colours
#color cyan/blue white/blue

## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret

#
# examples
#
title Windows 95/98/NT/2000
root (hd0,4)
makeactive
chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

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

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specifiv kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
# kopt=root=/dev/hda1 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,0)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery mode) single
# altoptions=(recovery mode) single

## nonaltoption boot targets option
## This option contols options to pass to only the
## primary kernel menu item.
## You can have ONLY one nonaltoptions line
# nonaltoptions=quiet splash

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all

## ## End Default Options ##

title Ubuntu, kernel 2.6.8.1-2-386
root (hd0,0)
kernel /boot/vmlinuz-2.6.8.1-2-386 root=/dev/hda1 ro quiet splash
initrd /boot/initrd.img-2.6.8.1-2-386
savedefault
boot

title Ubuntu, kernel 2.6.8.1-2-386 (recovery mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.8.1-2-386 root=/dev/hda1 ro single
initrd /boot/initrd.img-2.6.8.1-2-386
savedefault
boot

### END DEBIAN AUTOMAGIC KERNELS LIST

creo que esta info es suficiente.
gracias

Imagen de sanse
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title Windows 95/98/NT/2000
root (hd0,4)
makeactive
chainloader +1

Seguro que es hd0,4? no seria 3

*********************************************
URL: http://www.xsanse.net
Linux user: #380048
PACO: Penja Ases pro Codi Obert
**********************************************

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---
Email: xaviersansebastian(arrobita)gmail (puntito) com
Linux user: #380048 PACO: Penja Ases pro Codi Obert

Imagen de centurix
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Para que wiondows funcione sin problemas debe estar instalado en la primera partición primaria del primer disco (hda,0) o (hd0,0) según te aparezca; en mi caso es (hd0,0), linux en (hd0,1)

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--
Elementary OS "Luna"
LRU #473102

Imagen de Anónimo
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he resuleto no dar mas vueltas, hare un back up, y reparticionare el disco.

gracias por los concejos

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