I had *exact* the same problem! I have a TYAN K7X and dual athlon 1900+ and onboard adaptec U160 SCSI controller with a 18GB seagate HD.
I did install RedHat 7.3 and if I tried to boot off the hard disk I got the no operating system message as well. Then I tried to boot from SCSI channel B and this works! Sigi -- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
