OK, I bought myself a Mylex Acceleraid 170 Raid, and a couple of
10k u160 36Mb drives and set up a RAID 1 config.  I wanted to
be able to run the same kernel I was running on other machines
(2.2.17) and I wasn't able to find a distro that would install
directly to the RAID array, so I installed to a SCSI drive
attached to a BusTek KT958.  After the install I fdisked the
RAID array, made appropriate filesystems, copied the filesystems
from the BusTek SCSI drive to the RAID array, modified lilo to
boot from the RAID array, shut the machine off, yanked the power
from the drive connected to the BusTek, rebooted and voila',
I booted from the RAID array.

I was feeling pretty smug until I removed the BusTek card
from the PCI bus (which wasn't connected to any drives).
When I did this and powered up, the LILO prompt never appeared - 
just a bunch of linefeeds (at least thats how it appeared - the
cursor walked to the bottom of the screen, and then the
Mainboard BIOS messages scrolled off the top).

Bemused I put the BusTek card back on the PCI slot (again,
nothing attached), powered up, and I booted from the RAID
array without problem.

Too weird for my besotted brain - anyone have any thoughts?
Kent