I don't know about the CD-I've had no luck with that one either, but I did manage to make an OS9 only hard drive. I put a second IDE drive in my new MDD 1Ghz machine. Initialized it with the OS X CD's. The CD's won't let you install only OS9, so you have to go through installing OSX first, and then installing OS9. Then, simply throw away anything that doesn't say "OS9" in it's folder name. You should now have a bootable OS9 hard disk. This seems to be working for me, allowing you to have one completely independent drive for PT5.1.x, and another for PT 6. Plus, you get plenty of extra space on a seperate drive for video files or personal documents you might want to keep off the main system drive. rcm