如何将debian装入USB-HDD?

[freesisyphuswang <freesisyphuswang@gmail.com>]

Hi All,
俺是新手,
BIOS支持USB-HDD启动,俺尝试将Debian装入USB-HDD,但是启动后出现error 17有时出现error 18
不理解的是:
Grub error 17 
17 : Cannot mount selected partition 
This error is returned if the partition requested exists, but the filesystem type cannot be recognized by GRUB.

 reiserFS难道GRUB不能支持?不可能吧?!

Grub error 18 
18 : Selected cylinder exceeds maximum supported by BIOS. This error is returned when a read is attempted at a linear block address beyond the end of the BIOS translated area. This generally happens if your disk is larger than the BIOS can handle (512MB for (E)IDE disks on older machines or larger than 8GB in general).
这个就更不可能了吧,该BIOS能够Handle>160GB 的硬盘,同样的硬盘如果装dos是能够引导的
请

希望各位牛人诊断一下是怎么回事. 
分区
sda2 Primary 20G reiserFS 挂载 "/",当然/boot也在上面.
(160G HDD的仅有的一个primary分区)
sda3 -sda5 扩展分区 不使用(其后 140G不列举了)

grub被放在sda MBR中, 
grub的menu.list:


## ## End Default Options ##

title Debian GNU/Linux, kernel 2.6.8-2-386 
root (hd1,1)
kernel /boot/vmlinuz-2.6.8-2-386 root=/dev/sda2 ro 
initrd /boot/initrd.img-2.6.8-2-386
savedefault
boot

title Debian GNU/Linux, kernel 2.6.8-2-386 (recovery mode)
root (hd1,1)
kernel /boot/vmlinuz-2.6.8-2-386 root=/dev/sda2 ro single
initrd /boot/initrd.img-2.6.8-2-386
savedefault
boot

### END DEBIAN AUTOMAGIC KERNELS LIST

# This is a divider, added to separate the menu items below from the Debian
# ones.
title Other operating systems:
root


# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/hda1
title Microsoft Windows XP Professional
root (hd0,0)
savedefault
chainloader +1

freesisyphuswang <freesisyphuswang@gmail.com>