This is encouraging, but according to our local AppleCentre store, Apple can no longer supply OS 9 installation disks. In the hope they are wrong, I'll contact Apple Australia direct tomorrow and see if I have any luck. Incidentally, I discovered mine is an 800 MHz model, not 867 MHz as I thought. Don On 10/07/2008, at 5:11 PM, MB wrote: > James Herndon said: > >> My understanding is that Apple changed the rom architecture of the >> Titanium PowerBooks G4 sold after approximately January 10, 2003 so >> that users could no longer boot into OS 9. > > This is just wrong. All Titaniums can be made to boot into OS 9 with > an > off the shelves OS 9 system disc, i e an OS 9 disc purchased > separately, > as the latter of the titaniums weren't delivered with such a disc. The > 867 Mhz model most likely need a 9.2.2 disc. At least I wouldn't > expect > it to boot on a 9.1 disc. > > The OS 9 discs that came with the latter Titanium systems are system > restore images and you'll need a Tiger updated version of the > installation software in order to install those as the discs > themselves > contain the10.2 versions. Available from apple support. > > For simplicity though and the need of a minimal classic system, I'd > prefer a proper OS 9 installation disc. > > _______________________________________________ > Titanium mailing list > Titanium at listserver.themacintoshguy.com > http://listserver.themacintoshguy.com/mailman/listinfo/titanium