Finally fixed my WD20EARS
Meanwhile I finally got around to fixing my old WD20EARS which was factory programmed to park the heads after 8 seconds. I had to figure out how to disable AHCI to boot into FreeDOS and set the idle to 300 seconds. The poor drive had been parking once a minute for 14,000 hrs! Its a wonder it didn't park itself to death.
WDC is the devil.