Trying to save external hard drive. . . any ideas?

I have an Aluminum 15" 1.67 GHz Powerbook. A few months ago, I replaced the 80 GB internal hard drive with a 250 GB drive. That process went well, and I'm very glad I did it.
I had intended to put the 80 GB drive I removed from my Al book into my old Ti Book (400 MHz). I have an external firewire enclosure that is housing the 80 GB drive right now.
The problem: When I was trying to copy the TiBook's internal drive to the 80 GB one via Carbon Copy Cloner, the process basically hung, and after about an hour and a half of frozen progress bar, I hard-reset my machine. That apparently killed the external drive. Now, when I plug the external 80 GB drive into either of my computers, it does not show up on the desktop. Disk Utility can see the drive, so I try to use Disk Utility on either machine (the TiBook is OS 10.4.11, the AlBook is OS 10.5.3), but re-formatting the 80 GB drive always fails immediately after I click "erase", with an error message: "Failure due to input/output error." I actually removed my internal TiBook drive and put it in the enclosure, then hooked it up to my AlBook. That worked fine, so I know the problem is with the 80 GB drive, not the external enclosure itself.
I bought DiskWarrior ($100!), hoping it would do what Apple's Disk Utility couldn't and erase and reformat the drive. But when I try to use it to "rebuild" the drive, it, too, hangs (I've left it for up to 3 hours with no change in the progress bar) and I have to either force quit diskwarrior or reset the computer.
Am I out of options? Is the drive simply dead as a doornail and there is no way I can bring it back? I don't really care about the data that was on the drive, since that is all backed elsewhere. I was just hoping to use it to go from 10 GB to 80 GB in my TiBook, and I'm kind of peeved that Diskwarrior was $100 worth of useless.
Thanks!

Nice long story, but the short version would be better. Is this drive now in the external enclosure? If so connect it to one of your computers and try the following:
Extended Hard Drive Preparation
1. Open Disk Utility in your Utilities folder. If you need to reformat your startup volume, then you must boot from your OS X Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger or Leopard.)
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Click on the Options button, set the partition scheme to GUID (only required for Intel Macs) then click on the OK button. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount on the Desktop.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
If the drive is not accessible in Disk Utility or is not visible in Disk Utility then either the drive is dead or your enclosure is dead, or you have a defective cable.

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Hello My name is john...
I got a powerbook G4(500 Mhz) 15-inch screen, 30GB internal hard drive. I`m looking for an external hard drive to store my files( and to add more storage space)I looking for external hard drive like no more than $69.99 dollars....Something else....could anybody tell me the difference in getting a USB 2.0 port & FireWire????
http://www.amazon.com/Western-Digital-Passport-External-WDXMS600TN/dp/tech-data/ B000HZD2XK/ref=deasmtd/105-4949246-1849227?ie=UTF8&qid=1181576487&sr=8-6 Could anybody advised me If this is a good external HDD...pelase I would like it..If a lot of people could participate in this forum/discussion....to bring new ideas and suggestions and comments....
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I know, that when it comes for asking the same questionnaire in all my forums all over again..its get a little bothersome, right???
Yes it does. Once is enough.
Your Tibook only has USB 1.1 ports, not USB 2 ports. You would be insane to buy a USB drive to use with it, unless you also buy a USB 2 adapter card for your CardBus slot. But we've already been all through that with you, in one of the dozen or more threads you've started while spinning your wheels and repeating yourself for the last three weeks.
If you can only find one drive for $69.99, and $69.99 is the most you're willing to spend, then your choice is already made, and you don't need any other recommendations.
There aren't a lot of people reading or responding to questions in the Tibook Discussions any more. If you look through the forums, you'll see that it's fairly unusual for more than three or four different people to post in any given thread lately. The likelihood that you will get a wide variety of responses to any question posted here is pretty small. That's too bad, perhaps, but that's the way it is.

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DaisyMay wrote:
Firewire 400/USB 2.0/1.1
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cadee
Welcome to the HP Community Forum.
I hate to be the bearer of bad news; this vintage drive might have died.
If you are lucky, it is only the power supply, although this is a thin hope and is not based at all on the facts.
Depending on your level of desperation, you might consider taking the drive to a forensic specialist.
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I grieve for your loss.
Click the Kudos Thumbs-Up to say Thank You!
And...Click Accept as Solution when my Answer provides a Fix or Workaround!
I am pleased to provide assistance on behalf of HP. I do not work for HP.
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Hi,
Just want to clarify, have you checked to make sure the cords are not damaged (going from hard drive to computer and or any power source )?
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