--- On Mon, 3/1/10, John Musbach <[email protected]> wrote:
> From: John Musbach <[email protected]>
> Subject: Re: looking for Mac os 9.1
> To: [email protected]
> Date: Monday, March 1, 2010, 1:22 PM
> On 3/1/10, Gregg Eshelman <[email protected]>
> > Not for any Mac that requires OS9 Helper to run 9.2
> and later!
>
> That may be true, I've never dealt with that utility and
> it's installation process before but if it's simply a extension
> it shouldn't be much trouble to place in the system folder
> extensions folder before booting into that os.
To use OS9 Helper on a Mac that normally only supports up to 9.1, you first
must install 9.1. Then OS9 Helper copies resources from the installed System
file and patches the 9.2.x updaters so they'll install and keep the needed
resources, which Apple removed from 9.2.x.
Thus it's possible to have 9.2.2 on a NuBus PowerMac, but not too beneficial
since most of the updates for 9.2.x do nothing for the NuBus ones.
So with any Mac that official OS support ends at 9.1, the only way to get 9.1
on it is booting from a retail CD-ROM or exact copy. IIRC, those are the 60x
CPU models.
I suspect Apple could have made the 9.0 to 9.1 updater work, but decided not to
so people would be forced to buy a Mac OS 9.1 CD - or a whole new Mac - to get
9.1 for their discontinued computer.
--
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