I've got G4/450 with a 20 Gig & 40 Gig and am Preping for OS X. I'm currently an OS 8.6 diehard, and use 9 on the other drive when necessary. I've got a bunch of audio apps that aren't real friendly with 9 and there isn't a whole lot of extra performance for me to want to switch. Can I partition Hard Drive 1 on the ATA Chain in two - one for OS X, and one for OS 9. Then leave 8.6 on Hard Drive 2. Thus when I boot to OS 9 parition I will have start-up disk control panel that gives my the 8.6 drive as an option and OS X? Am I crazed our does anyone think this will work.