I have a question about this. I have a Digital Audio G4 upgraded to 1.467 GHz, so it can run Leopard. Right now it dual boots between 9.2.2 and Tiger 10.4.11, both in the same partition. (Being Tiger, I can also run Classic in Tiger.) This computer did, years ago, have Leopard 10.5.8 installed and worked fine. A stock G4/667 can't install Leopard, but this one can when the installer sees more than 867 MHz reported.) I'm considering upgrading the Tiger install to Leopard. As long as I can still boot directly into OS 9, I'm not concerned about losing Classic in OS X as I know would happen with a Leopard install. My question is: If I upgrade the Tiger install with Leopard, understanding that I lose Classic in OS X, will I still be able to boot either OS 9 *or* Leopard? Or do I need to backup the drive, wipe it into two partitions, one for OS 9 and Tiger and one for Leopard, and do it that way? I'd prefer the former (one partition) if it works; again, I'm not concerned about losing Classic as long as I can still boot directly into OS 9. But if not... I guess I'll get my copy of SuperDuper out and prepare multiple partitions.