You are probably way ahead of me but I remember getting that error
under 2 conditions (I think).
1. If the geometry of the disk didn't match its real geometry or the
boot partition went past the 1024 sector (although
it is supposedly possible to fake out the boot proms according
to a little pamphlet by Matt Welsh that came with the old
Infomagic CD set.)
2. If I installed a new vmlinuz without rerunning lilo.Good Luck, Nathan
