There are 2 models of that. there's the Hard Disk 20 which had a Mac
floppy interface on it, and the Apple Hard Disk 20 SC which had a SCSI
interface.
At 05:16 PM 10/15/01 -0700, you wrote:
>I don't think the one that he's talking about is SCSI, it plugs directly
>into the floppy port on a Mac 128k or Mac 512K. ISTR, using one on a newer
>Mac Plus instead of a SCSI drive as I needed something of that formfactor
>and that was all I could get my hands on at the time.
>
>Based on how it's used, I'm guessing you're right about it being a MFM
>drive, but I suspect it's some wierd sort of bridge in it.
>
> Zane
>
>
> > I think I've got an old Hard Disk 20 and it's a SCSI device. I'll have
> to find
> > the lid to see what it says on it, though. It seems to me that it's an
> old MFM
> > drive with a customed up SCSI bridge adapter on it.
> >
> > Dick
> >
> > ----- Original Message -----
> > From: "Chris" <mythtech_at_Mac.com>
> > To: "Classic Computer" <classiccmp_at_classiccmp.org>
> > Sent: Monday, October 15, 2001 2:39 PM
> > Subject: IIgs using hard disk 20
> >
> >
> > > Does anyone know if an Apple IIgs can use an old Macintosh Hard Disk 20.
> > > The Mac HD is NOT scsi, but rather uses the disk drive port on a Mac. It
> > > was designed to work with older non scsi macs (128k 512k), and could be
> > > daisy chained thru the disk drive ports (at one point, I think I had 3 HD
> > > 20s and a 400k drive connected to my 128k Mac).
> > >
> > > The IIgs has a disk drive port, and visually, the 3.5" drive I have for
> > > it looks just like the 3.5" drive I have off an old Mac Classic (I have
> > > to go off visual, as the one from the Classic has no labels or other
> > > markers beyond the apple logo... don't know why, that is the way it was
> > > when it was given to me).
> > >
> > > I was hoping maybe they used the same ports, and I might be able to use
> > > the HD 20 with my IIgs so I can add a hard drive to it.
> > >
> > > Anyone info would be great.
> > >
> > >
> > >
> > > -chris
> > >
> > > <http://www.mythtech.net>
> > >
> > >
> >
Received on Mon Oct 15 2001 - 21:16:16 BST