No other Apple hardware than Mini will load MorphOS by chance with this release. AFAIK during Boot the hardware version is checked, if it is not a Mini, boot gets abandoned.
Yeah, I don't really get why it's so difficult for people to understand that this release is for Mac Mini? :-?
Of course, nothing wrong with a healthy hack&try attitude (it *could* work ;-)), but when it says "This release is for Mac Mini" I think it's fair to expect that:
1. It works on all Mac Minis.
2. It doesn't work on other Mac's than the Minis.
Anyways, congratulations to the MorphOS team for this release (and to every Amiga NG enthusiast that wants the cheapest and most powerful Amiga ever!)
:-)