> > Yes, the Sony OA-D32 drives. Single-sided 600 RPM. One *could* argue, > that, given the data rate, it's already "high density" (of a sort). I
I would say it's normal double density (the spacing of the flux transitions on the disk is the same as on a PC 720K disk) but a high data rate due to the double spindle speed. There's a double-head version too. Not surprisingly I've worked on a lot of these drives, HP used them in many of their HPIB disk units. There was a later half-height version (not a high density drive, same format as the full height ones) which shares a lot of parts with the Apple 800K drive. -tony
