I'm hoping someone out there can help me remember. I can dig through my hellbox and hook up a drive and figure it out, but I'd just as soon hear it from someone with a better memory. It's this: The old Sony SS 40-cylinder 3.5" floppy drives--was cylinder 0 located an additional step outwards from where modern 3.5" drives put cylinder 0? I can't remember for sure--it's a sign of age. Cheers, Chuck