[problème de boot] LILO: Conflit entre Mandrake 8.1 et Red Hat 7.2

/dev/hda8 on / type reiserfs (rw,notail,notail)  # ma partiton principale. Celle qu'appelle lilo pour booter linux
/dev/hda1 on /boot type ext2 (rw)
/dev/hda9 on /home type reiserfs (rw,notail)
/dev/hda10 on /usr type reiserfs (rw,notail)  
/dev/hda11 on /usr/local type reiserfs (rw,notail)
/dev/hda2 on /mnt/win_c type vfat (rw,nosuid,nodev,umask=000) # mon disque C: où est le système windows
/dev/hda5 on /mnt/win_d type vfat (rw,nosuid,nodev,umask=000)
/dev/hda6 on /mnt/win_f type vfat (rw,nosuid,nodev,umask=000)
 

# /etc/lilo.conf - See: `lilo(8)' and `lilo.conf(5)',
# ---------------       `install-mbr(8)', `/usr/share/doc/lilo/',
#                       and `/usr/share/doc/mbr/'.
 
# +---------------------------------------------------------------+
# |                        !! Reminder !!                         |
# |                                                               |
# | Don't forget to run `lilo' after you make changes to this     |
# | conffile, `/boot/bootmess.txt', or install a new kernel.  The |
# | computer will most likely fail to boot if a kernel-image      |
# | post-install script or you don't remember to run `lilo'.      |
# |                                                               |
# +---------------------------------------------------------------+
 
# Support LBA for large hard disks.
#
lba32
 
# Specifies the boot device.  This is where Lilo installs its boot
# block.  It can be either a partition, or the raw device, in which
# case it installs in the MBR, and will overwrite the current MBR.
#
boot=/dev/hda
 
# Specifies the device that should be mounted as root. (`/')
#
root=/dev/hda8
 
# Enable map compaction:
# Tries to merge read requests for adjacent sectors into a single
# read request. This drastically reduces load time and keeps the
# map smaller.  Using `compact' is especially recommended when
# booting from a floppy disk.  It is disabled here by default
# because it doesn't always work.
#
# compact
 
# Installs the specified file as the new boot sector
#
install=/boot/boot-menu.b
menu-scheme=wr:bw:wr:Yr
 
# Specifies the location of the map file
#
map=/boot/map
 
# You can set a password here, and uncomment the `restricted' lines
# in the image definitions below to make it so that a password must
# be typed to boot anything but a default configuration.  If a
# command line is given, other than one specified by an `append'
# statement in `lilo.conf', the password will be required, but a
# standard default boot will not require one.
#
# This will, for instance, prevent anyone with access to the
# console from booting with something like `Linux init=/bin/sh',
# and thus becoming `root' without proper authorization.
#
# Note that if you really need this type of security, you will
# likely also want to use `install-mbr' to reconfigure the MBR
# program, as well as set up your BIOS to disallow booting from
# removable disk or CD-ROM, then put a password on getting into the
# BIOS configuration as well.  Please RTFM `install-mbr(8)'.
#
# password=tatercounter2000
 
# Specifies the number of deciseconds (0.1 seconds) LILO should
# wait before booting the first image.
#
# delay=20
 
# You can put a customized boot message up if you like.  If you use
# `prompt', and this computer may need to reboot unattended, you
# must specify a `timeout', or it will sit there forever waiting
# for a keypress.  `single-key' goes with the `alias' lines in the
# `image' configurations below.  eg: You can press `1' to boot
# `Linux', `2' to boot `LinuxOLD', if you uncomment the `alias'.
#
# message=/boot/bootmess.txt
 prompt
# single-key
# delay=100
# timeout=100
 
# Specifies the VGA text mode at boot time. (normal, extended, ask, <mode> )
#
# vga=ask
# vga=9
#
vga=normal
 
# Kernel command line options that apply to all installed images go
# here.  See: The `boot-prompt-HOWO' and `kernel-parameters.txt' in
# the Linux kernel `Documentation' directory.
#
# append=""
 
# Boot up Linux by default.
#
 
default=Linux
 
image=/vmlinuz #à modifier si ton vmlinuz est ailleurs, ex: /boot/vmlinuz-2.4.16
 label=Linux append="hdc=ide-scsi acpi=no-idle" # les append dépendent de ma config, dans le doute ne mets rien pour commencer
 read-only
# restricted
# alias=1
 
image=/vmlinuz.old
 label=LinuxOLD # juste un kernel de secours.
 read-only
# optional
# restricted
# alias=2
 
# If you have another OS on this machine to boot, you can uncomment the
# following lines, changing the device name on the `other' line to
# where your other OS' partition is.
#
other=/dev/hda2 # à adapter
 label=Windows
# restricted
# alias=3