When your Windows is brand-new, it doesn't have the drives that run the HDD or link the hard drives. That's why you must check out the drivers on your system and install them online, via disk, or every drive simultaneously. Go through the steps below to update the HDD and driver: ...
And as amazingly convenient as the OWC Data Doubler makes adding a second drive to your MacBook Pro, that just means you now have two drives sucking down power, rather than just one. Of course, the easiest thing to do would be to replace any platter-based hard drives with an OWC Solid...