Dualboot xandros et ubuntu sur un eeepc

Bonjour,

hier en voulant installé linux mao j'ai fait une nouvelle partition mais sa a bugé donc je me suis retrouvé sans rien

donc j'ai sortis mon cd de ubuntu 9.04 et je lui est dit de s'installé sur cette partition (/dev/sda3)

a la fin de l'installation il me demande de redemaré je redemare et voila que sur grub j'ai pas ubuntu

assez chiant sa :(

je me suis dit bah pourquoi pas utilisé le fichier menu.lst de xandros et rajouté les infos de mon menu.lst de jaunty encore une fois sa marchais comme je desespére je vous demande de l'aide

voici le fichier menu.lst de xandros

#
# Configured by Xandros Configuration system.
#
hiddenmenu
# default boot entry
default=0

# Boot automatically after 1 second.
timeout=0

# Fallback to Configure.
fallback=2

title Normal Boot
	root (0x80,0)
	kernel /boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll root=/dev/sda1
	initrd /boot/initramfs-eeepc.img

title Perform Disk Scan
	root (0x80,0)
	kernel /boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll root=/dev/sda1 XANDROSSCAN=y
	initrd /boot/initramfs-eeepc.img

title Restore Factory Settings
	root (0x80,0)
	kernel /boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=normal nosplash=y irqpoll root=/dev/sda1 XANDROSRESTORE=y
	initrd /boot/initramfs-eeepc.img

et voila le menu.slt de jaunty

# 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 use 'savedefault' 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		10

## 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		(hd0,0)
# 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 options 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 specific 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_2_6_8=root=/dev/hdc1 ro
##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=8d61536d-9a57-429d-8170-383bacafcd1b ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=8d61536d-9a57-429d-8170-383bacafcd1b

## 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

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash

## should update-grub lock old automagic boot options
## e.g. lockold=false
##      lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

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

## 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

## specify if running in Xen domU or have grub detect automatically
## update-grub will ignore non-xen kernels when running in domU and vice versa
## e.g. indomU=detect
##      indomU=true
##      indomU=false
# indomU=detect

## should update-grub create memtest86 boot option
## e.g. memtest86=true
##      memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##

title		Ubuntu 9.04, kernel 2.6.28-11-generic
uuid		8d61536d-9a57-429d-8170-383bacafcd1b
kernel		/boot/vmlinuz-2.6.28-11-generic root=UUID=8d61536d-9a57-429d-8170-383bacafcd1b ro quiet splash 
initrd		/boot/initrd.img-2.6.28-11-generic
quiet

title		Ubuntu 9.04, kernel 2.6.28-11-generic (recovery mode)
uuid		8d61536d-9a57-429d-8170-383bacafcd1b
kernel		/boot/vmlinuz-2.6.28-11-generic root=UUID=8d61536d-9a57-429d-8170-383bacafcd1b ro  single
initrd		/boot/initrd.img-2.6.28-11-generic

title		Ubuntu 9.04, memtest86+
uuid		8d61536d-9a57-429d-8170-383bacafcd1b
kernel		/boot/memtest86+.bin
quiet

### 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 an existing
# linux installation on /dev/sda1.
title		Normal Boot (on /dev/sda1)
root		(hd0,0)
kernel		/boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll root=/dev/sda1 
initrd		/boot/initramfs-eeepc.img
savedefault
boot


# This entry automatically added by the Debian installer for an existing
# linux installation on /dev/sda1.
title		Perform Disk Scan (on /dev/sda1)
root		(hd0,0)
kernel		/boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll root=/dev/sda1 XANDROSSCAN=y 
initrd		/boot/initramfs-eeepc.img
savedefault
boot


# This entry automatically added by the Debian installer for an existing
# linux installation on /dev/sda1.
title		Restore Factory Settings (on /dev/sda1)
root		(hd0,0)
kernel		/boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=normal nosplash=y irqpoll root=/dev/sda1 XANDROSRESTORE=y 
initrd		/boot/initramfs-eeepc.img
savedefault
boot

j'espére avoir était compréhensible

je vous remercie d'avance pour votre aide

cordialement minibn59