Re: mounting a Prodos hard rive on a Power PC

[supertimer@aol.com (Supertimer)]

mewen@home.com (Michael Ewen) wrote:

>Hopefully someone can help me or point me in the right direction. I have
>just sent my old and very dear IIGS to the basement and would like 
>to copy the hard drive to my Performa 6360, Running OS 8.5 (1.2 Gig Hard 
>Drive and 32 megs memory, plus another 32 in virtual memory).  Now I've 
>hooked them togther put it hasn't mounted on the desktop.  Help!!!
>I want to copy my files ad programs(so I cna use Bernie) to my PowerPC. 
>How can I do it.  I've tried using Mt Everything and SCSI Probe to get the
>Mac to recognize my ProDos volumne and while to acknowledges that it is
>their it will not mount it on the desktop.  I've tried PC Exchange but
>again with no luck.  Any other suggestions???

You need GenEx, a program that makes IIGS formatted hard
drives readable on Macintosh.  Then all you have to do is,
on the IIGS, set up an HFS partition, copy all your files there,
and connect the drive to your Mac.  The HFS partition will
mount on Macintosh Finder.

Download this link (just click and hold down the mouse button
on Mac Netscape and select "Save link as..."):

http://ground.ecn.uiowa.edu/apple2/upl98/Feb98/GenEx.shk

Here are the docs to GenEx:

GenEx 1.0b1 is copyright 1994 by Jay Krell. All rights reserved.
GenEx is freeware. You may distribute it freely, but you may not
sell it for more than duplication costs. Even though no fee is
mandated, it's still be nice to get some feedback; read/skip
through to the end for addresses.

...I've been sharing hard drives between my IIGS and various
Macintoshes since soon after System 6 was released and the
capability shouldn't be difficult to take advantage of.

GenEx is a simple, bare-bones application with a small purpose,
to extract a GenericMacSCSI driver from the version of Advanced
Disk Utility included in Apple IIGS System Software 6.0 and
6.0.1 (and future?). What is GenericMacSCSI? On the Macintosh,
each device (or at least many) must have a driver on it, instead
of installing a driver in the System folder as is done on the
IIGS. If you format a hard drive with IIGS Advanced Disk Utility
(ADU), it makes room for a Macintosh driver and tries in two
ways to fill the space. (I suspect it only reserves the space if
you make an HFS partition, but I can't check now.) If it
identifies the device as an Apple brand hard drive, it uses a
driver built into it; if it is not an Apple brand hard drive,
it looks for a file called GenericMacSCSI in the Drivers folder
of the booted System and uses it. The nasty hack that GenEx
pulls is to read the Apple brand driver out of ADU (its
"location" is documented) and writes it to a file named
GenericMacSCSI.

[Success with ADU format]...I have personally used the Apple
driver on a Quantum ProDrive 40 and 100 and 44 Meg Syquest on a
Macintosh LC, II...

[Comparisons to problems formatting with a Mac]...I formatted a
hard drive on a Mac once and the IIGS saw like 32 LARGE BAD
DEVICES on it; it appeared to me that instead of filling unused
partition information with zeros, the formatter filled it with
some other number. ADU would not even format the hard drive. I
had to use the 8-bit utilities to format it and then ADU.

Another good option for formatting hard drives for use on both
Macs and Apple II's is Apple's HD SC Setup on a Mac. However,
to use it with non-Apple drives, you either need the version
included with A/UX (Apple's flavor of Unix) or you need to
apply a patch recently published in MacWeek. Normally, HD SC
Setup only formats Apple brand hard drives.

[More features possible]...possible features added:

If I understand the System 6 documentation correctly, a
Macintosh driver can be added to an already formatted hard
drive. This is likely to be very useful for anyone with a hard
drive with data on it that they'd like to connect to a
Macintosh. Let me know if you need this and I'll consider
adding it (I'm presently tired and feeling lazy, but that
changes).

...The name GenEx stands for GenericMacSCSI Extractor and, in
a slight nod to pop press, Generation X, of which I guess I am
a junior member.

Jay Krell
734 North Highlands Drive
Harrisburg PA 17111