Re: Picked up an old Pentium with MMX @ 166mhz... Problems.
On a system that old, yup, you're going to have to set everything up yourself if the mobo doesn't have the autodetect feature we now take for granted. Just get the LBA, sector count, etc information from the drive label, then use a custom drive setup in the BIOS. Once you set it up correctly, it should recognize the drive.