Ubuntu 8.04

[Rob]

Greetings all,

Perhaps someone knows the answer to this...

Several days ago, I installed Ubuntu 8.04 to an external drive here (a 
Hitachi 300 gig which has an option of a SATA connection or USB -- I'm 
using USB).  Following the installation and reboot (it did NOT ask me 
where -- or even if -- I wanted to install Grub) I am confronted with a 
Grub error nbr 21.  Unfortunately, the boot process gets no further.  I 
do not know how to fix this unless it's editing Grub but I have no idea 
where the installation tried to put Grub.  I'm guessing on my internal 
hard drive and not very successfully.

I have been booting with a Super Grub CD we burned a couple of days ago 
but so far, that only lets me boot to Windows..not Ubuntu on my external 
drive.  I'm wondering if anyone knows how I can fix this.  I fear if I 
format my external drive via Windows and reinstall Ubuntu again, I'll 
get the same result.    I have a Lenovo System Model 9120CTO with 
Processor x86 Family 15 Model 107 Stepping 2 AuthenticAMD ~2700 Mhz with 
BIOS Version/Date LENOVO 2UKT46AUS, 12/26/2007 and one internal 300 Gig 
Hitachi hard drive and one external 300 Gig Hitachi hard drive connected 
via USB as indicated above.

Does anyone have any suggestions as to what I can do to fix this booting 
problem short of formatting my external drive again and making another 
attempt to install Ubuntu (I'd guess with the same results).

Many thanks in advance.

RobF
Rockville, MD