Help - I've completely borked up my linux

[Knute Johnson]

I was playing around trying to install xubuntu on a usb doover and 
somehow I completely borked up my FC6 installation.  I have a 
computer with two hard drives.  On the first drive is Win XP and the 
second had (and I think still does but borked) FC6.  I went to boot 
it after I got done playing with the xubuntu and FC6 wouldn't start.  
It starts to come up but about the time it goes looking for the 
drives it panics saying it can't find /dev/root.  I booted the FC6 
Rescue CD and it says there are no Linux partitions.  I ran fdisk and 
looked at /dev/sdb and it says there are two partitions, sdb1 and 2 
and 1 is marked bootable.

Am I completely hosed or do you think I can recover from here?

Where do I start?

Thanks very much,

-- 
Knute Johnson
Molon Labe...