Here is the work around I am using until I figure out why after booting into OS9 the OSX finder hangs and you end up with a blue screen and a twirling color curser alternating back and forth with a black arrow curser
The only way I was able to get back into osx was to do a complete reinstall including repartitioning the disk, installing os9 and x. Now here is the not so good part. OSX works just fine if I never boot into OS9 again! If I attemp to switch OS's and use 9, the next time I go back to X I have the same problem and I have to do the entire reinstall again. I have tried this several times and it remains consistant. Thats a real drag.
The first 3 weeks I had the system up and running I did not have this problem. I could come and go as I wish from either OS. Since the initial crash with an OS9 app in OSX, I don't know. It changed something somewhere. Something that can't be erased using a reformat and reinstall routine. I even tried the killing PRAM with 5 chimes deep and that did not have an effect.
I have also tried only using my factory memory configuration, and removing my SCSI 2906 card all to no avail.
But at least for now OSX is up and running, and I just have to use OS9 within the framework of OSX. Until new light shines on this problem, I'll have to stay away from booting OS9.