Disk Utility Unable to Probe Target Disk

Hi All,

iMac G5 iSight turns on to the blinking folder icon. Booted to a Tech Tools drive, tried repair disk in disk utility, it said it was unable to repair.

Booted the G5 in Target disk mode, connected over firewire to a White Macbook. Eventually, the G5's hard drive turned up in Disk Utility but not on the desktop or in Finder. Tried to Mount the HD, that failed, and DU told me to repair the volume first. Initiated a repair through DU.

The repair is taking quite a while, so I checked out console.

Here's the console messages

Oct 11 11:04:03 eva-gils-macbook diskarbitrationd[31]: unable to mount /dev/disk2s2 (status code 0x00000001).

Oct 11 11:07:48 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:15:18 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:16:03 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:16:03 eva-gils-macbook diskarbitrationd[31]: unable to probe /dev/disk2s2 (status code 0xFFFFFFFC).

Oct 11 11:17:33 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:24:18 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:25:03 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:25:03 eva-gils-macbook diskarbitrationd[31]: unable to probe /dev/disk2s2 (status code 0xFFFFFFFC).

Oct 11 11:31:48 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:32:33 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:32:33 eva-gils-macbook diskarbitrationd[31]: unable to probe /dev/disk2s2 (status code 0xFFFFFFFC).

Oct 11 11:36:18 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:40:03 eva-gils-macbook kernel[0]: disk2s2: I/O error.

Oct 11 11:43:48 eva-gils-macbook kernel[0]: disk2s2: I/O error.

So, lots of Input Output errors and unable to probe. I'm wondering, does anyone have experience with this? Is the drive completely hosed? Is DU first aid still my best option? I'd love to get the seven years of stuff off that computer so I can back it up and wipe the HD.