The info that you accurately failed to post a link to:
http://forum.hddguru...ils-t13964.htmlis a re-post of the info here:
http://www.hddrecove.../reference.htmlhttp://www.hddrecove....org/donor.htmlwhich has obviously been ripped from somewhere, in the original there must have been images that did give some sense to sentences like:
Matching the highlighted area is necessary for successful PCB replacement.
Not present on the drive in pictures, but if present always match for PCB replacement.
and the (Colour) given on each entry.
It is
EXACTLY the kind of misleading or "vague" information that there is around.
There is NO such thing as "Western Digital" drives, in 2000 they changed their numbering scheme:
http://redhill.net.au/d/d-00.html would you bet your data on the fact that this:
Western Digital hard drive donor
* Model Number (Blue)
Always match the full model number (including the characters after the hyphen. This is important for PCB and Head swaps/ platter transplants.
* DCM Code (Yellow)
Matching the whole DCM code would be the best, but if you cannot the 5th and 6th characters should be ok; this is for head swaps and platter transplants.
Note: success has been made while just matching the 6th character .
* PCB Code (Red)
Matching the highlighted area is necessary for successful PCB replacement.
is accurate for the particular drive model you have i your hands?

A similar (original) page WITH images:
http://www.dataclini...mpatibility.htmIf you read HDDguru, read it all:
http://forum.hddguru...ter-t13751.htmlhttp://forum.hddguru...ion-t11473.htmlhttp://forum.hddguru...e-t8951-20.htmlWhat you are looking for:
What i would need, i think, is a tool which is able to address the HDD without requiring the BIOS to detect the drive. Then a way to access the system area and rewrite it. All that assuming, that there is no hardware defect.
Of course exists, and you can buy it for a nice, round
x ranging in the 2000 to 3000 US Dollars, as an example:
http://www.pc3000.com/http://www.acelaboratory.com/An old version. like:
http://www.acelabora....com/pc3000.htmwould do, but I don't think you can find one used, original and for a decent price.

Another "original" app/hardware:
http://www.salvation...t/hd-doctor.htmYou can try your chances with places like this, "only" $650, but you don't really know what you get (or what you fail to get....

):
http://www.harddisklab.com/or maybe even less:
http://www.hddworld....epairtool.shtmlJFYI:
http://forum.hddguru...-pci-t6293.html
jaclaz