GRUB problem: Booting Linux from USB Disk

Hello:

My PC BIOS supports booting from USB devices, so I decided to load FC5 on one of my USB attached disks (300GB Seagate).

I successfully did so, but I can't get GRUB to work right (i.e. to complete the boot). I may be experiencing a syntax or GRUB usage problem

Problem description:

dev-sda (internal SATA Drive - Windows XP) dev-sdb (internal SATA Drive - for Backups)

dev-sdc (external USB Drive - Fedora Core 5) dev-sdc1 (hd2,0) =boot dev-sdc2 (hd2,1) = dev-sdc3 (hd2,2) = swap

During the install, I specified that "stage1" of GRUB was to be put on the first sector ofdev-sdc1 (and it was).

But when I boot the PC using the USB device, all I get is:

GRUB

(Literally, that's all I see). This tells me that the PC finds "stage1" on the disk, but "stage1" cannot find "stage2" (I think that's what happening). So I booted to rescue mode off a CD-ROM and used grub(8) and grub-install(8) in various ways to modify the "stage1" grub image.

For example:

root# mount -t ext3 -o rwdev-sdc1boot root# grub-install --root-directory=-bootdev-sdc1 root# umountboot

root# grub install (hd2,0)-boot-grub-stage1 d (hd2) (hd2,0)-boot-grub-stage2 p (hd2,0)-boot-grub-menu.lst

I also tried the above 'install' grub sub-command by omitting the '-boot' part in various parts of it.

HELP -- I did my homework and tried what I found all over. But no success here. And its probably something simple.

Basically here is what I have and need (a review):

- I have FC5 installed on the device slices shown above (-dev-sdc). - I can select to boot off that device when I turn on my PC (by pressing F8). - I have a Knoppix and FC5 rescue CD's that I can boot off to work on my GRUB issues. Now...

Tell me what GRUB commands to run (or re-run correctly) the get the system to complete the boot to that USB disk.

(Note: I don't want nor need to mess with the MBR ondev-sd*a*, which holds Windows XP, because my PC can boot USB devices; in this case it isdev-sdc).

BTW... the 'menu.lst' has an entry for Windows XP and one for the FC5 (default is FC5).

Thanks in advance.

N Milton