Re: ZIP drive /Mac monitor ->IIGS?

[stever@gate.net (Steve Reeves)]

In article <19961116142546261452@dempson.actrix.gen.nz>,
David Empson <dempson@actrix.gen.nz> wrote:
>You can also exchange data with a Mac by using HFS-formatted (Macintosh)
>cartridges.  One problem is that the standard Iomega formatting software
>on the Mac leaves some extra partitions on the disk which are not
>recognised by the IIgs, and they cause an error to be reported when you
>insert the cartridge.  You can just cancel the dialog box and use it
>like an HFS hard drive.  It may be possible to avoid this by using some
>other set of tools on the Mac to partition the cartridge.

There are two partitions the GS can't recognize.  One is of type
"Iomega_DiskInfo" and is specific to the Iomega software.  (I have no
idea what the purpose of this is.  It seems to be mostly empty space.)

The other partition is of type "Apple_Driver43" and stores a Mac SCSI
Manager 4.3 compliant driver.  This appears on many Mac hard drives
formatted with recent software, not just Iomega disks.  The GS'
SCSIHD.DRIVER recognizes and ignores "Apple_Driver" partitions but not
"Apple_Driver43" (which were defined after GS System 6.0.1 was released).

I imagine that it wouldn't be too hard to patch SCSIHD.DRIVER (and
SCSICD.DRIVER too) to ignore any partition types that begin with the
string "Apple_Driver" rather than explicitly match it.  This should
also work with any future variants that Apple decides to create (such
as from the upcoming MacOS 8).

-- 
Steve Reeves
stever@gate.net