TechTool Deluxe (applecare CD) unmounted my hard drive

I'll just detail what happened, any and all suggestions would be helpful.
1. Ran Permission repair utility: everything checked out
2. Ran Disk repair utility: Catalog error found
3. Rebooted mac with techtool deluxe cd.
4. Enabled all tests (including volume structure test)
5. All tests check out fine save for volume structure: which is what I expected
6. prompted me to "repair" drive, clicked "ok"
7. After repair successfully completed rebooted mac
8. Kernel Panic upon reboot
9. After multiple reboots, restarted from Tiger install disk.
10. According to Tiger install disk, main hard drive is "unmounted" and un-journaled
11. Re-started again from TechTool Deluxe Cd
12. Ran Tests again (this time only Volume Structure) Passed
TechTool completely recognizes my hard drive, and everything on it (correct amount of space used etc. While OSX says I have nothing on it, and refuses to boot normally without the aid of a CD. What are my options at this point?

Hi Jason, and a Warm Welcome to the Power Mac G5 Forum!
There is some(!) discussion of this problem here
http://discussions.apple.com/thread.jspa?threadID=120264&start=0&tstart=0
And some stable door here
http://docs.info.apple.com/article.html?artnum=301269
You could try (if you haven't already) using the Disk Utility on the 10.4 retail disk to Mount and Repair the boot drive
http://docs.info.apple.com/article.html?path=DiskUtility/10.5/en/duh1018.html
You may be able to use Firewire TDM to access the drive, if you have another Mac
http://docs.info.apple.com/article.html?artnum=58583
and try Disk Utility from there - and maybe rescue your data, if you need to.
I haven't read it all the way through... but the early posts seem to have ended in an Erase and Install of OS X; Disk Warrior did not appear to help - but is a useful Utility to have, so may be worth a try
http://www.alsoft.com/DiskWarrior/index.html
and highly-recommended by many in this Forum.
You can download and burn a current TechTool CD here
https://support.apple.com/techtooldeluxe/main?id=dl
- if you have AppleCare, of course.
Good Luck.

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