Cannot see new hard drive in disk utility

Hi-
My original hard drive (less than a year old) when down hard. I bought a new Seagate 160GB SATA drive and I cannot install Tiger (or Panther for that matter) because I have no hard drive recognized in the drive utility. Curiously, I ran Apple basic HW test and mass storage checked out okay...the test just showed passed. Seagate offered no help - I can't see any info regarding jumpers or such... SATA shouldn't need it anyway. My system is completely deviod of 3rd party items - completely stock as shipped.
I then ran the extended hardware test and received error code 2GMC /2/15: built-in.
Sounds like I'm hosed. Whatever it is, it probably took out the original hard drive.

Yes, the same thing happened to me. No, solutions yet.
Were you using Software Update to upgrade?
I've tried most of the repair methods listed here and elsewhere. I think my external hard drive (external La Cie 200 gig) was damaged by the update process. As now it can't be read by my laptop either.
Very angry about this. but i'll turn that anger into another post. Good luck, let me know if you find a way to revive disks while i look for something more powerful than Disk Utility (it bails out of even the Verify Disk process).

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Following a "Flashinhg Question Mark" iMac was unable to boot.
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I was in the process of running Disk Utility last night to repair permissions when it gave me a message that it could not connect to Disk Management Unit (I think that was the name) and suddenly quit. I tried again, and the same thing happened. Then, the computer froze with the spinning rainbow again, and I had to do a hard shutdown. When I tried to restart, I got a gray screen. I tried squeezing the left corner again, and after a couple of attempts was able to boot the computer. However, it froze again and had to be shutdown. This cycle happened a few more times before I decided to give it a break.
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Hello there,
I have been facing this problem: After I started getting an error 50 error while trying to view in Quicktime player a movie which I had exported from FCPX today, I found that I was not even able to trash the movie [this was a test movie used for export and I had no need for the same]. A little while later when I opened FCPX, I found this message pop up:
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Hello Klaus,
I think I have been able to overcome the problem/s.
I have been using my Seagate 2 TB drive [2 USB] with a FW adapter and was using FW connectivity for the past several months without any problems. About 2 months ago I added a 2 TB Lacie, FW, to my workflow and this EHD was daisychained to the Seagate. Had been facing no problem with this arrangement until today.
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Cannot see new hard drive in disk utility

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