External FireWire Hard Drive with Invalid Volume Header

Hi All

As the subject say's I have an external FireWire HDD with an Invalid Volume Header when I run the disk utility. Below is what I get:

Disk Utility stopped verifying “External 120” because the following error was encountered:

The underlying task reported failure on exit


Verifying volume “External 120”
Invalid Volume Header
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume External 120 needs to be repaired.

Error: The underlying task reported failure on exit

1 HFS volume checked
Volume needs repair

Then when I run the repair, I get:

Verify and Repair disk “External 120”
Invalid Volume Header
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
Repairing volume.
Rechecking volume.
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume information.
The volume External 120 was repaired successfully.

1 HFS volume checked
Repair attempted on 1 volume
1 HFS volume repaired

Still cant mount the External 120 Drive on either an eMac or an Intel iMac.

Simple question. WHY???


Regards
Lee