Can't repair disk with Disk Utility

Question

I had the spinning wheel of death on my G5 Imac so booted from instal disk and ran Disk Utility and got this message :-
First Aid failed
Disk utility stopped repairing disk 1 because the following error was encountered:
The underlying task reported failure on exit
In the list window when it got to checking catalog file I got
checking catalog file.
-Invalid sibling link
Rebuilding catalog B-tree.
-The volume disk could not be repaired
Error: The underlying task reported failure on exit
1 HFS volume checked
1 volume could not be repaired because of an error
Repair attempted on 1 volume
1 volume could not be repaired
Any suggestions? or is this the end of the road for my Hard Disk?
Would another disk repair program be able to repair this problem?
Thanks
John

Answer 1

Hi
I tried diskwarrior but but couldn't get to the rebuild directory page.
When I hit the agree button the screen goes grey with a spinning wheel then Imac reboots itself.
Tech support at D.warrior suggested resetting pram and open firmware but this makes no difference I'm awaiting further suggestions from them.
Any ideas here?
I ran a hardware test which showed nothing wrong.
Just read about target disk mode can link up and access my imac from my Ibook and repair the Imac with diskwarrior through the Ibook?