G3 B&W Freezes at OpenFirmware. HELP!!!

I have a PowerMac G3 Blue & White. I have a 6 GB Quantum Fireball and a 9.6 GB Quantum Fireball HD hooked up to it. 488 MB of RAM, and a DVD+-R/W drive. Previously, the 9.6 gb drive worked fine along with the 6 GB drive. Then I hooked the 9.6 Gb drive up to an iMac G3 and it corrupted the drive. I erased the 9.6 GB drive, and Mac OS X says it is unreadable. The whole time, the 6 GB drive has worked. I erased the 6 GB drive, then put a fresh install of Panther on it. I downloaded XPostFacto because I was attempting to install Tiger on it using my PowerBook G4 install DVD, and it said it couldnt be installed on the computer. When I selected my wanted options in XPostFacto and restarted using the disk, the PowerMac started up in Open Firmware mode, and it is completely frozen. What do I need to do??

John,
"What do I need to do??"
May I politely say "start with a strategy." Experimenting is fun and rewarding but not always productive.
"The whole time, the 6 GB drive has worked. I erased the 6 GB drive, then put a fresh install of Panther on it."
First, I would get a second drive or partition the 6 gig drive. Space will be tight but you can strip down an OS for diagnostic boot purposes. If you have a backup CD of your prior configuration, now would be the time to use it. Otherwise, reinstall Panther on one drive and have a working drive to start from. Then you can install software to a second drive with out having to boot from an install CD. Booting from an install CD limits some of your options.
I like to have what I call a polaroid picture of my last working system folder. Toast will make a bootable CD for emergency restorations of pre-OS X systems. X will need Carbon Cloner. Your best bet would be to get a universal install CD as well.
Ji˜m

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    I would appreciate a "try this, then try this" approach, especially if you have tried it and it has worked for you.
    Thanks for the help,
    Kendra

    OK, Mean, I mean Meanest, we have the same system (mine was purchased late 2006), and I can say we have identical symptoms. I agree with Paul_31 regarding disk space, but in addition, from all the posts on various Apple forums, it seems clear that the problem is due to the Radeon X1600 graphics card AND heat. These elegantly-designed Macs that we all love have a lot of stuff packed into a small package. Consequently they run hot, and over time the result is components bake and deteriorate. In our case, the weak link seems to be the Radeon card and since it’s not easily replaced, repair costs are nearly as much as the cost of a new iMac. A contributing factor is that over time dust will build up inside your Mac, and this serves as insulation, retarding heat transfer, and causing components to run hotter still.
    OK, so that’s the sad tale, but what can you do? Assuming your system is not too far gone due to the ravages of heat over time, there are things you can do to help prolong it’s life, and hopefully get it to behave itself better until the time it finally fails completely.
    In my case, the steps I’ve taken have resulted in a system that now “generally” runs for days at a time without locking up/crashing. A caveat: these are bandaids, not true fixes. I’m convinced the Radeon card will eventually fail and I’ll be faced with shopping for a new Mac – I’m only hoping the steps taken will give me a few more years of use before that happens. So, here’s my suggestions (basically they all have to do with getting your Mac to run cooler and being able to monitor temps so you know just how hot things are getting):
    1. First of all, if you don’t already have one, get one of the free programs available to monitor your Mac’s internal temperatures. One of the most popular ones is a widget, iStat Pro. As I type this iStat Pro is showing my temps are as follows:
    Hard Drive 92 deg. F
    CPU 85 F
    Ambient Air 69 F
    GPU Diode (graphics card) 92 F
    Hard Drive Bay 95 F
    Memory Controller 90 F
    Optical Drive 81 F
    If you have iStat Pro and see that your temps are about the same as these, I would say don’t bother to read further – you may have a different set of problems. If your temps are 10-20 F (or more) higher, keep reading.
    2. Try to clean out the internals of your Mac with compressed air. After 3+ years of use, I used an air compressor with an air gun attachment and blew through the vents at the back and bottom of my Mac with 60-80psi and actually saw a cloud of dust come out of my Mac. A more effective approach would entail cracking open the case of the Mac so you could really blow directly on the different boards/components. I haven’t done that, but I’m tempted to give it a try. Note: Some have suggested vacuuming and/or using a can of compressed air. I don’t think that approach is all that effective. You need a really strong flow of air to get that dust out of the inards.
    3. Download the free program SMC Fan Control (v 2.2.2). It will allow you to adjust the fan speeds higher for each of the 3 internal fans. The Mac has firmware that ramps up the speeds of these fans as internal temps rise, but the general consensus is the Mac firmware is “too little, too late”. With the standard Mac firmware, the fans will run at their default settings well beyond the point where the components are already way too hot. SMC Fan Control allows you to set the minimum fan speeds higher than the Mac default.
    Once you've done these steps, I'd suggest doing a SMC reset, then re-boot while keeping your fingers crossed.
    This is getting too long so I’ll stop for now. Good luck...

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