Well, it'll read other floppy disks, like I have a disk with Photoshop
2 and I was able to install Photoshop from it. (onto the Plus) I think
that it might just be that 1.44Mb disks can't be formatted in an 800K
drive? Maybe that's Dylan's problem, also?
Dylan, what exactly happens when you put in an 800K disk to your 7100?
That might help us with your problem. I don't have any 800K disks, but
from what I've heard they should work in newer 1.44Mb drives.

     -Cyrus

On Feb 10, 5:38 pm, Matthew Wheeler <[email protected]> wrote:
> It is highly possible that the drive is dirty or damaged (out of alignment).
> I've had a few drives work only with media that they format. Occasionally,
> that drive might read other media, but your situation is a classic symptom
> of this problem. I have not heard of any method that will fix. I've always
> replaced the drive.
> Matthew
>
> On Tue, Feb 10, 2009 at 6:17 PM, Cyrus <[email protected]> wrote:
>
> > Does it work the other way? I have a Mac Plus, and it seems to be able
> > to format a 1.44Mb disk sot that it can read it, but then none of my
> > other macs (IIsi, G3 minitower) will read it, and if I format the
> > disks on the newer macs, the Plus won't read them.
>
> >     -Cyrus
>
> > On Feb 10, 5:06 pm, Derek Morton <[email protected]> wrote:
> > > Dylan,
>
> > > I am not sure where you got it that a superdrive is incapable of reading
> > 800K disks, but it will.  It will also read 400K disks...  Support for MFS
> > was dropped at some point, although I cannot recall what OS version (8?).
> >  As long as the disks are HFS (which they should be), you should be good to
> > go.
>
> > > Keep in mind that when the original "superdrive" floppy drives came out
> > the Mac had only been around a few years and there were still plenty of
> > people with 400K and 800K disks in use...  Not to mention the extra cost of
> > HD disks back then (the hole punch was my friend).
>
> > > Derek
>
> > > >     I need a 800k 3.5" external disk drive for my
> > > > PowerMac 7100. The
> > > > only connection on these machines that seems viable for
> > > > such a device
> > > > is the SCSI port, but that dosn't really make sense for
> > > > such a slow
> > > > device. I definitely don't think one could use the
> > > > serial / printer
> > > > port. I have never seen an external disk drive for a
> > > > PowerMac. My
> > > > Apple IIe & GS have a special port just for external
> > > > floppy drives,
> > > > does anyone know if their is an adapter that makes these
> > > > compatible
> > > > with a Macintosh? This would be great, because I have
> > > > several of these
> > > > drives already.
>
> > > > The reason I need this is because the 2MB internal drive
> > > > won't read
> > > > 800k disks, no Mac "superdrive" will. I never
> > > > understood this
> > > > limitation with Mac machines, as I come from a PC
> > > > background. This has
> > > > never been true of PC disk drives. I understand why it
> > > > won't work,
> > > > because of head alignment, I just don't understand why
> > > > this is not the
> > > > case in PC drives. Anyone know a way around this? I
> > > > don't think there
> > > > is one.
>
> > > > Does anyone have a 800k 3.5" drive that will work with
> > > > a PowerMac 7100
> > > > which they wouldn't mind selling for a reasonable
> > > > price?
>
> > > > Thanks,
> > > > Dylan
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