커널 설치 후 부팅 하는데 x가 안뜨고 initramfs prompt가 드네요

커널 업그레이드에 관해 몇번 질문글 올렸던 초짜 리눅서입니다

컴파일도 은근슬쩍 넘어가고

커널 패닉도 오늘에서야 configuration 바꿔가면서 은근슬쩍 넘어갔는데

이젠 제목과 같은 문제가 생기네요

부팅하고 esc
grub 메뉴에서

Ubuntu 8.04.3 LTS, kernel 2.6.23-rtai(설치한 커널)

를 선택하면

Uncompressed Linux, Ok, booting the kernel. 이 나오면서 시작 로딩 화면 나오구요. 그런데 이게 꽤 오래 지속됩니다

그러고 난 다음에 x 화면의 로그인 창이 뜨는게 아니라

BusyBox v1.1.3 (Debian 1:1.1.3-5ubuntu12) Built-in shell (ash)
Enter 'help; for a list of built-in commands.

(initramfs)_

와 같은 쉘이 뜹니다

로딩과 위의 프롬프트 사이의 로그는 그리 길지 않은데요 내용은 이렇습니다.

Loading, please wait...
Check root = bootarg cat /proc/cmdeline
or missing modules, devices : cat /proc/modules ls /dev
ALERT! /dev/disk/by-uuid/107411d1-0b87-4bc7-8348-1f94c33803a5 does not exist. Dropping to a shell!

아! 그리고 /boot/grub/menu.lst 내용은 다음과 같습니다.

# 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 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 (hd0,0)
# 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=107411d1-0b87-4bc7-8348-1f94c33803a5 ro

## Setup crashdump menu entries
## e.g. crashdump=1
# crashdump=0

## 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=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 8.04.3 LTS, kernel 2.6.24-26-generic
root (hd0,0)
kernel /boot/vmlinuz-2.6.24-26-generic root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro quiet splash
initrd /boot/initrd.img-2.6.24-26-generic
quiet

title Ubuntu 8.04.3 LTS, kernel 2.6.24-26-generic (recovery mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.24-26-generic root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro single
initrd /boot/initrd.img-2.6.24-26-generic

title Ubuntu 8.04.3 LTS, kernel 2.6.24-24-generic
root (hd0,0)
kernel /boot/vmlinuz-2.6.24-24-generic root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro quiet splash
initrd /boot/initrd.img-2.6.24-24-generic
quiet

title Ubuntu 8.04.3 LTS, kernel 2.6.24-24-generic (recovery mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.24-24-generic root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro single
initrd /boot/initrd.img-2.6.24-24-generic

title Ubuntu 8.04.3 LTS, kernel 2.6.23-rtai
root (hd0,0)
kernel /boot/vmlinuz-2.6.23-rtai root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro quiet splash pnpbios=off
initrd /boot/initrd.img-2.6.23-rtai
quiet

title Ubuntu 8.04.3 LTS, kernel 2.6.23-rtai (recovery mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.23-rtai root=UUID=107411d1-0b87-4bc7-8348-1f94c33803a5 ro single
initrd /boot/initrd.img-2.6.23-rtai

title Ubuntu 8.04.3 LTS, memtest86+
root (hd0,0)
kernel /boot/memtest86+.bin
quiet

### END DEBIAN AUTOMAGIC KERNELS LIST

커널 설치시에 모듈이 잘못된것 같기도 하고, grub설정이 잘못된것 같기도 한데
어떤 종류의 문제입니까? 어떻게 고쳐야 할까요?

최소한 어떤 종류의 문제인지만 가르쳐주셔도 큰도움이 될것 같습니다^^