G4 450 sawtooth won't boot OS 9 anymore??

OK it seems nobody is interested in OS 9 any more which is a shame because the plugins and hardware that still run on it are bring used every day by studios all over the place. The thing that is weird is I was able to boot on both 9 and X for years until suddenly my machine hates 9 and still likes X. It won't boot on a 9 CD only on a X CD. The preferences pane shows all OS 9 and OS X discs available put will only boot up onto X and once when I put in an OS 9.2.2 content disk it did boot but went running back to X for some reason and refused to boot in OS 9. This is a G4 450 sawtooth which was originally built and made to run OS 9 so it makes no sense that it refuses now to boot into OS 9. Can somebody please help me to get this machine to boot into OS 9?!
I would gladly erase the X disc and format it with the original restore discs that I have with OS 9 and then upgrade with the discs I have to get back to OS 9.2.2 but I'm afraid that if I do that my machine won't boot at all because it hates 9 now and loves X. I just bought a new pram battery so I hope that helps but I doubt it.  Also just to be clear I have OS 9 classic installed on this machine and it starts up and runs fine in OS X but certain programs won't launch such as ...............PROTOOLS!!!! AAGH which goes right up to the point of loading plugins and then says "unable to create a DAE Deck". I know there has to be a simple answer for this is any body out there?
I'm running OS 9.2.2 (not) and OS X tiger (unfortunately) on a G4 450 with a protools expansion chassis hooked up and digidesign quiet drive (which isn't very quiet) everything appears to show up fine on and work on the desk top and digi init and Quicktime all show up when launching OS 9 classic after booting from OS X. This machine was built to run OS 9 ......OS 9 not OS X but now it has decided never to boot in OS 9 again! Can somebody please tell me why?

The Sawtooth G4 will only run Mac OS 9 discs that look like:
http://www.wap.org/journal/macos9/OS-9c.jpg
with either 9.0, 9.0.2, 9.0.4, 9.1, 9.2.1 in fine print on the left.
No system specific Mac OS 9 disc will work, nor update, nor dropin.
Booting off Mac OS 9 on the hard drive if you erased and installed Mac OS X requires installing Mac OS 9 drivers first:
Mac OS X: About the "Install Mac OS 9 Drivers" Option in Disk Utility
Make sure you are indeed talking the Sawtooth (AGP PowerMac), and not the earlier revision known as Yikes (PCI PowerMac):
Power Mac G4: How to Differentiate Between Models
The Sawtooth is the first one to support the startup manager for booting:
Use the Option key, when possible instead of 'C' key to boot discs
And that's handy because it works on multiple partitions, showing you the last operating system that Startup Disk Control Panel or System preference selected to boot. 
Classic mode, sadly does not support Mac OS 9 extensions very well.   You have to boot directly into Mac OS 9 for specific extensions, which may answer a Protools in Classic mode issue.

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