I don't have two the same. They are both IBM but the product and revision numbers are quite different for each drive. The scsiinfo command gives me the drives' serial numbers which are both different and nothing like the number quoted in the error message.
Ok I am looking at the Lilo source now, it all seems to happen in device.c at about line 425
Can you set the verbosity to level 4 "lilo -v 4", run lilo and send the output.
Wayne