Boot failure on FC4 install

[Matthew Saltzman]

Booting from CD 1 produces the boot screen.  Pressing Enter produces:

     ISOLINUX 3.08 2005-05-19 isolinux: Loading spec packet failed, trying
     to wing it...
     isolinux: Found something at drive=9F
     isolinux: Found something at drive=81
     isolinux: Found something at drive=80
     isolinux: Looks like it might be right, continuing...
     isolinux: Image checksum error, sorry...

     Boot failed: press a key to retry...

This happens with a CD1 that burned correctly and has been used to install 
on two other machines.  It also happens with a CD burned with boot.iso 
from the images/ directory on the same drive I'm booting from.  Same 
result booting with "linux nodma".

The machine is an Athlon T-Bird on an ASUS A7V motherboard.  The IDE 
controller (hard disk) is a Promise Ultra-100.  The SCSI controller 
(CD-ROM and <blush> SyJet drive) is a BusLogic BT-958.

Suggestions?

TIA.
-- 
 		Matthew Saltzman

Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs