Change disk controllers - help

[Sturgis, Grant]

I am attempting to add a PERC 3/DC to a system which is currently using 
the onboard AIC 7899.

So I added the card, moved the SCSI connector, and configured the disks 
in the PERC BIOS (no raid, just simple volumes).

When booting Linux, Grub starts but then a kernel panic:

mkrootdev: label /1 not found.

No surprise since the system probably can't mount the root file system.

Can anyone help me with getting this system booted?  I am guessing I 
need to create a new initrd?

I should be able to just plug in the other disk controller and get the 
system back online.

Thanks in advance,

Grant
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