I think that you have a problem with with "Power-up in Standby" ...
Use this tool ( "turn_off_poweron_in_standby-1.01.iso) to force the drive to spin (you will have to boot from the iso).
URL for the tool is :
http://sourceforge.net/project/showfile ... _id=136732
Your drive have a firmware bug and WD haven't provided a fix for it, once you turn on "Power-up in Standby" you will not be able to turn that off, because the drive will report that it doesn't support it.
You will be able to boot the drive on the PC but you will not be able to fix the firmware, because WD doesn't provide any fix for it.
You could use PC-3000 to fix the drive but it very expensive.
Drive before EFh 06h:
Word 83 (A6h): 61h 7Fh
Word 86 (ACh): 41h 3Ch
Drive after EFh 06h:
Word 83 (A6h): 01h 7Fh
Word 86 (ACh): 21h 3Ch
The above EFh 06h is the ATA command for "SET FEATURES - Enable Power-up in Standby". The hex words 83 & 86 you see there are the response to the ATA command IDENTIFY DEVICE. What it says is that before the SET FEATURES command, the drive supports "Power-up in Standby" and that it is disabled. After the feature is enabled, the drive says it does not support it, yet the drive says it is enabled.
Reporting the wrong information is one thing. But once that feature is enabled, the drive refuses to disable it with the SET FEATURES Disable Power-up in Standby (EFh 86h). An ATA RESET command does not work either.