En fait c'est assez bizarre, quand je démarre l'ordi, au moment au grub se lance, j'ai donc le décompte des 10 secondes, mais je ne vois rien d'écrit.
J'ai installer le noyeau rt via le lien apt:// que propose ce site sur l'installation d'ubuntu-studio:
http://doc.ubuntu-fr.org/ubuntu_studio
Voici le resultat de menu.lst:
# Splashimage line added by kubuntu-grub-splashimages package
splashimage=(hd0,0)/boot/grub/splashimages/KUBUNTU_splashscreen_blue_neon_logo_03.xpm.gz
foreground = ffffff
background = 555500
# 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=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=5743b16a-4096-4588-bcf2-2edcab0bfb0e
## 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
## 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 8.10, kernel 2.6.27-9-generic
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro quiet splash
initrd /boot/initrd.img-2.6.27-9-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-9-generic (recovery mode)
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-9-generic root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro single
initrd /boot/initrd.img-2.6.27-9-generic
title Ubuntu 8.10, kernel 2.6.27-7-generic
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro quiet splash
initrd /boot/initrd.img-2.6.27-7-generic
quiet
title Ubuntu 8.10, kernel 2.6.27-7-generic (recovery mode)
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-7-generic root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro single
initrd /boot/initrd.img-2.6.27-7-generic
title Ubuntu 8.10, kernel 2.6.27-3-rt
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-3-rt root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro quiet splash
initrd /boot/initrd.img-2.6.27-3-rt
quiet
title Ubuntu 8.10, kernel 2.6.27-3-rt (recovery mode)
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/vmlinuz-2.6.27-3-rt root=UUID=5743b16a-4096-4588-bcf2-2edcab0bfb0e ro single
initrd /boot/initrd.img-2.6.27-3-rt
title Ubuntu 8.10, memtest86+
uuid 5743b16a-4096-4588-bcf2-2edcab0bfb0e
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST