Re: Unidisk Lobotomy?

[Wayne Stewart <waynes@intergate.bc.ca>]

Supertimer wrote:

>
>
> I sent IIGS user Trevor Mahan this URL containing lobotomy
> instructions:
>
> http://ground.ecn.uiowa.edu/apple2/MiscInfo/Drives/unidisk35.labotomy
>
> Trevor was a new IIGS user who did not have the UniDisk
> driver and needed the 3.5 drive to work.  After performing the
> lobotomy, GS/OS booted.

A IIgs will boot system 5.0.4 or system 6.0.1 from a UniDisk without
the UniDisk driver. It won't recognize a second UniDisk drive without
the driver but the boot one it will. If you boot from another device
you need the driver to see a UniDisk drive but booting from a
UniDisk is a slightly different situation. Sort of analogous to bootin
GSOS off a hard drive with no SCSI driver  However it is extremely
slow.


> Could it be that you need to remove the UniDisk 3.5 driver
> to avoid confusing the software?  That might explain why
> it worked for Trevor but not for you.  If not, you may want
> to send email to tjmahan@earthlink.net Trevor Mahan to
> see what went differently.

First thing I tried was to simply plug it into the smartport on a
IIgs with no cards in the IIgs and try to boot from a floppy
however the drives didn't even spin, replaced with platinum
3.5 and it worked fine. That should be an indication of a problem
in itself. Tried it with a hard drive that didn't have a UniDisk driver
and platinum 3.5 would work but no lobotomized UniDisk would.

I'll email Trevor and see what he has to say.