Made Tri-boot:OSX/OS9.2.2/Ubuntu. How do I get OS9 to be bootable again?

Question

Situation setup:
A friend gave me an iBook 300mhz clamshell to use. I wanted to set it up to dual boot between OSX and OS9, but realized that it was a bit outdated for OSX. So I bought a 466mhz iBook se logic board (will have to dremel out a hole for the firewire port), a stick of 512MB RAM, an airport card and am looking for a DVD burner to round off the upgrade. Rather than wait for the new logic board to arrive (which would probably allow me to install OSX via firewire), I decided to install the two OSs onto a 20GB drive in a powerbook Ti 500Mhz computer, and then transplant the drive over to the FrankenBerry clamshell. I have read a few articles/posts where people have installed OSX for the clamshell in this manor.
I had OSX/OS9.2.2 dual booting fine, when I came across Ubuntu for powerpc. Hmmmm...Might be nice to have three OSs on the clamshell. I repartitioned the drive using iPartition, creating 4GB of free space...OSX/OS9 dual boot still worked fine. So far, so good. I then installed Ubuntu Feisty 7.04 into the free space partition and got it to dual boot between Ubuntu/OSX. I figured the only way to get back into OS9 was to boot into OSX and choose OS9 in Startup Disk, which I did. When I reboot, I get the floppy icon and question mark ?!? I thought OS9 was simply a folder in the OSX partition and didn't have any sort of partition(s) of its own...does it?
I had to insert my G4's OSX install CD to change the Startup Disk back to OSX (booting with Option only shows the first OS found on a drive). Once in OSX, I successfully started up classic, pointing it to the OS9 System folder. It told me it had to update some disk drivers in order to work, but that it wouldn't affect my OS9 install. Sure enough, I still can't boot into OS9.
Question:
Is it safe for me to re-install OS9 from the G4 install CD, or will that somehow mess up the OSX and/or Ubuntu installation? My gut tells me that installing OS9 won't touch anything in another partition, but I had something bad for lunch and I don't think I can trust my gut at the moment. Also, since I had already updated to OS9.2.2, should I trash the OS9 apps/system folders and secure empty the trash first?
Thanks in advance for any help offered.
15" 500Mhz PBTi/512MB/Airport, 15" 800Mhz PBTi/512MB/Airport, FrakenBlueBerry 466Mhz iBookse/576MB/Airport Mac OS X (10.4.9) iSight/60GB Video iPod (soon to be un-stolen!)

Answer 1

Have you tried holding down option on boot to see if
you can see the os 9 install?
Yup, that's why I mentioned it in my post. I found that holding down option will only show one os per partition (or per hard drive, can't tell at the moment), so if I set OSX to be the startup disk, that's all I see from my local HD when holding down option key during boot. If OS9 was set as the startup disk, then all I see from the local HD is OS9 when booting with option key. If I do choose OS9 from the option screen, or simply let it try to boot OS9 on its own, I get the floppy icon and question mark alternation.
It just seems very peculiar to me that after adjusting the partition and rebooting, dual boot worked fine, but not after installing Ubuntu, which supposedly only touched it's one free space partition at the end of the drive. If Ubuntu only installs in an existing free space partition, how could it be possibly to erase any OS9 disk drivers? ie.creating the free space partition itself 'should' have caused whatever damage was going to be caused to OSX or OS9. Neither one of those OSs should be looking in the free space partition and Ubuntu shouldn't be looking outside of it.
Thanks for your input and encouragement, I'll probably just try throwing away the OS9 folders and re-install it from my G4 install CDs.
15" 500Mhz PBTi/512MB/Airport, 15" 800Mhz PBTi/512MB/Airport, FrakenBerry iBook Mac OS X (10.4.9) iSight/60GB Video iPod (soon to be un-stolen!)