Um, yes. I do. I have tried to use a Powerbook G4 install CD on a G4 tower and had it not work. I've also (unsuccessfully) tried to use a Mac Mini CD on a G4 Tower and had it fail. This has been the case on several occasions since I upgraded to OSX back with version 10.1.x. -Hal On Apr 19, 2007, at 11:25 AM, Philip J Robar wrote: > > On Apr 19, 2007, at 8:58 AM, Hal wrote: > >> ... In many cases, system CDs that are made for specific systems >> (like this one) will not install on other systems. They look for >> specific hardware to key the install and will not properly install >> on another system. > > Do you have any evidence or references to support this assertion? > > Phil > > _______________________________________________ > G4 mailing list > G4 at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/g4 > > Listmom is trying to clean out his closets! Vintage Mac and random > stuff: > http://search.ebay.com/_W0QQsassZmacguy1984