G4 MDD wont boot past logo, or to cd. Please help!

The power was cut as I was deleting my shared folder which had about 13gb worth of data on it. The process had just started. I tried to boot back up I hear the chime and then it goes to the apple logo then the whole thing just shuts down after a few minutes with the spinning icon. Things I have tried:
I tried the commandalt+OF then typed in "eject cd" to open the bay door. I put in the protection plan cd that said it had the tech tools software on it. I then reset the pram with the commandalt+PR and then tried to boot from the cd by holding down c. It does the same thing and never boots though I do hear the hd and the cd drive spinning up.
Tried holding down shift for safe mode. Same thing happens.
Tried holding down alt to boot from available partitions. I got the macintosh hd as an option but then when selecting it then continuing the same shut down happens after a few minutes with the apple logo.
I tried running fsck using some keystrokes found on other forums. I had the black dos-like interface (which i cannot figure out how to get back into as I am a newb with such things) in which I typed in fsck. I got an error about missing sibling link with numbers listed afterwards. I can try to get back into this screen with a bit more instruction on how I did it if the information would be helpful.
The computer has 2 hard drives in it. One of which was used as a secondary. It is a 40 gb maxtor that was partitioned into 2 drives because i couldnt format it correctly. I have unplugged that. It had an aircard that I removed. It had dvd rw drives one of which only reads. I unplugged the shifty one and left the good one in which is a pioneer 109D. My superdrive gave out long ago.
I have unfortunately not kept a very good backup and my life is on this computer. If this turns out to be an hd issue would it be possible to install osx on another hd and then pull files off of the bad one? I hope it is not an hd issue though. Please let me know of any further steps I can try and if there is any other information that would be helpful. The info on this pc is my livelihood. I thank you in advance.
Message was edited by: aaronleigh

I suggest you try to isolate the cause of the problem. I would start by disconnecting the hard drives - data and power cables, and then try booting from a bootable CD. If you can boot this way, it would show the problem is being caused by one of the drives. My guess is that is where the issue lies. This experience you report Tried holding down alt to boot from available partitions. I got the macintosh hd as an option but then when selecting it then continuing the same shut down happens after a few minutes with the apple logo suggests the computer itself is okay but cannot find an OS from which to boot.
The next thing, assuming you can boot without the drives present, would be to install the problem drive in a different computer, as the secondary drive. (This assumes of course that you have access to another Mac.) If that works you may be able to run an utility like Disk Warrior or TechTool Pro to address the sick drive.
Your plan to install an OS on a different drive is a good one, and what I have suggested above is a variant that would avoid buying another drive. If you do go that route, install a minimum OS on a new drive, and install the utility there as well. Test that you can boot from the new drive and work on the computer, before you install the bad drive.
In either case you will need a powerful utility. Both Disk Warrior and TTP are capable of fixing the type of problem you have.
Good luck.

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