Problème au démarrage (mise à jour noyau).

Bonjour,
Je suis actuellement sur un noyau 2.6.18 et j'ai compilé un 2.6.22 mais au démarrage du 2.6.22, j'ai l'erreur suivante :
VFS : Cannot open root device "hda1" or unknown block (0,0)
Please append a correct root="" boot option.
VFS : Unable to mount root fs or unknown-block (0,0).
C'est à peu près ça.
On m'a conseiller de remplacer hda par sda partout dans /etc/fstab et dans /boot/grub/menu.lst mais je ne comprends pas bien quoi faire et si ça va me faire planter Linux.
Ci-dessous les deux fichiers.
Sxmon

/etc/fstab :

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/hda1 / ext3 defaults,errors=remount-ro 0 1
/dev/hda5 none swap sw 0 0
/dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/scd0 /media/cdrom1 udf,iso9660 user,noauto 0 0
/dev/fd0 /media/floppy0 msdos rw,user,noauto 0 0



/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'.
# 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

## 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=/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

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

## 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=(single-user) single
# altoptions=(single-user 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

## ## End Default Options ##



title Debian GNU/Linux, kernel 2.6.22-3
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-3 root=/dev/hda1 ro
savedefault

title Debian GNU/Linux, kernel 2.6.18-4-486
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-4-486 root=/dev/hda1 ro
initrd /boot/initrd.img-2.6.18-4-486
savedefault

title Debian GNU/Linux, kernel 2.6.22-2
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-2 root=/dev/hda1 ro
savedefault

title Debian GNU/Linux, kernel 2.6.22-2 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-2 root=/dev/hda1 ro single
savedefault

title Debian GNU/Linux, kernel 2.6.22-1
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-1 root=/dev/hda1 ro
savedefault

title Debian GNU/Linux, kernel 2.6.22-1 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-1 root=/dev/hda1 ro single
savedefault

title Debian GNU/Linux, kernel 2.6.22
root (hd0,0)
kernel /boot/vmlinuz-2.6.22 root=/dev/hda1 ro
savedefault

title Debian GNU/Linux, kernel 2.6.22 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.22 root=/dev/hda1 ro single
savedefault

title Debian GNU/Linux, kernel 2.6.18-4-486 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-4-486 root=/dev/hda1 ro single
initrd /boot/initrd.img-2.6.18-4-486
savedefault