I have the first-release aluminum iMac with 320gb hard drive. Today, it decided to die on me, or so I think. Can you confirm what this means?: Notes: The drive name turned to "Media" and available space is 0 bytes. Also, in System Profiler, when I click on Serial ATA to check, it says "There was an error while scanning for Serial-ATA devices." As you can see, I decided to install OS X on my external firewire drive. Not the fastest thing around, but it works. Any solutions on how to fix my original hard drive, or is it dead? I'm scared to open up my iMac to replace it, though it's long been out of warranty. Any help would be appreciated. Thanks!