请高手指点：移动硬盘引导启动Ubuntu9.04不能进入系统！

[yimorulei]

将Ubuntu9.04 直接安装到移动硬盘上，设置了移动硬盘引导启动，挂本机硬盘能顺利启动，但拆掉本机硬盘用移动硬盘引导启动时出现启动模式选择菜单，但选正常启动后不能进入系统，出现如下内容：
Booting 'Ubuntu 9.04,kernel 2.628-15-generic'
Filesystem type is ext2fs,partition type 0x83
Kernel /boot/Vmlinuz-2.6.28-15-generic root=UUID=319901f9-ab2f-4265-b4cd-3a7535ad25e1 ro quiet splash
Error 2: Bad file or directory type
Press any key to continue...

附我的menu.lst :
# find --set-root /boot/fonts

# fontfile /boot/fonts



# splashimage /boot/splash/48.xpm



# 33E2AB 31E58B 96E618

# foreground 96E618

# background 000000



color black/cyan yellow/cyan





default 0

timeout 180



title Ubuntu 9.04, kernel 2.6.28-15-generic

root (hd0,4)

kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=6f292744-22a9-4448-baeb-daee84cce36d ro quiet splash

initrd /boot/initrd.img-2.6.28-15-generic







title Ubuntu 9.04, kernel 2.6.28-15-generic ( acpi=off noapic nolapic )

root (hd0,4)

kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=6f292744-22a9-4448-baeb-daee84cce36d ro quiet acpi=off noapic nolapic

initrd /boot/initrd.img-2.6.28-15-generic





title Ubuntu 9.04, kernel 2.6.28-15-generic ( xforcevesa )

root (hd0,4)

kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=6f292744-22a9-4448-baeb-daee84cce36d ro quiet xforcevesa

initrd /boot/initrd.img-2.6.28-15-generic





title Ubuntu 9.04, kernel 2.6.28-15-generic (recovery mode)

root (hd0,4)

kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=6f292744-22a9-4448-baeb-daee84cce36d ro single acpi=off noapic nolapic

initrd /boot/initrd.img-2.6.28-15-generic





title Ubuntu 9.04, memtest86+

root (hd0,4)

kernel /boot/memtest86+.bin