I have a 1.5GHz PowerBook G4, built July 2004. It is currently running OS X 10.5.8. At some point it lost the ability to run OS 9, even in Classic Mode. I assume that’s because of a firmware upgrade at some point. (?)
I’m looking to replace it as my mobile mac, but I would like to use it to run some OS 9 Legacy programs that I have never found good replacements for. Is it possible to “Downgrade” it so that I can install OS 9 as its operating system? …and if so, how difficult and/or costly would that be?
BTW: MacMost has become one of my must-visit sites on the Mac Web. Thanks for all the useful information!
Kirk Edgar Aplin