LILO hangs on hard drive boot

[Steve Doerr]

I've got Linux on a secondary IDE hard drive(secondary master).
When I set BIOS boot sequence to D:A:SCSI all I get is "LI" and
the system hangs.  Any ideas?  Can I spiff up that boot record
without messing anything up, or is LILO corrupted?  The system
runs fine when I use a boot floppy.
Any help would be greatly appreciated.