IIgs using hard disk 20

In a message dated 10/15/01 10:41:05 PM Eastern Daylight Time, mythtech(a)Mac.com writes: << There are two different products with the name Hard Disk 20. One is the Apple Hard Disk 20 SC and it is a SCSI device. There were also 40, 80 and I think 160 mb versions (and maybe others in larger sizes). BUT... predating that was a "Macintosh Hard Disk 20" that was not scsi. Rather is was some drive (don't know what kind, but MFM seems sensible enough) that used a special adaptor board that enabled it to plug into the disk drive port on a bunch of the older macs. It was all enclosed (drive, power supply, adaptor board) in one nice zero footprint beige case (back when beige meant brown, and not grey like "beige" computers of today). They are two totally different drives, sold at two different time periods (although, I do believe they overlapped for a while, until the SCSI version completely replaced the disk drive version). -chris >> I have a couple of those hard disk 20s that still work, one was recovered has an aftermarket board in it that upgrades it to a plus class machine, but I do know it works just fine with the 512k models I have. even though it's 20 meg, disk access is only about as fast as the floppy drive. -- DB Young Team OS/2 old computers, hot rod pinto, barbie's rocket motorhome and more at: www.nothingtodo.org