On Jan 30, 2011, at 8:38 PM, JoeTaxpayer wrote:
I have a disc labeled 9.2.1.
Yes, this is the standard grey "semi-universal" disc that ships with Macs that come with OS X standard. It will install a bootable System on almost all Macs, so it's "universal" in the sense that you'll get a bootable System, but it's not universal in the sense that it's missing extensions for earlier PowerMac models that didn't ship with OS X. For example, the Beige G3 series requires special extensions to enable the Wings AV personality card, and while the grey disc will give you 9.2.1 that boots, it won't enable the Wings AV card, so it's not a "universal" installer.
I got the MDD and Apple sent this for $10 shortly after as part of some upgrade program.
The MDD shipped with Jaguar 10.2. Retail boxes of Jaguar 10.2 also contained a retail 9.1 CD. The grey 9.2.1 was probably an additional disc with a Panther upgrade disc set? The grey 9.2.1 disc is very common, more common than the 9.1 retail disc. For most purposes, the differences between these discs (white 9.1 retail & grey 9.2.1 universal) is negligible, but in certain rare circumstances it can be slightly problematic. If your 9.2.1 disc was shipped for a MDD, it's likely the rarest 9.2 disc, the "special" MDD disc that adds specific support for the MDD only. I don't know, but I assume the special MDD disc is a superset disc that will work on all earlier Macs also?
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