Basic premise is: I have a WD Velociraptor that for most of the time does nothing. Mainly because it has windows on it, and unless VMWare Fusion is running it does nothing. Now due to some annoying things with OS X it doesn't spin down, therefore sits there using 5W all day long. Yes: The spin down HDs thing is ticked. This is also applicable to my MacBook Pro with an optibay on it. The SSD contains everything I use 95% of the time, the rest of the time the HDD in the bay spins needlessly, even when it's unmounted! I have an Applescript that unmounts them both but I need something to force them to spin down too. Is this possible? If so... how using Applescript (or something else which is triggered by Applescript)!? Thanks!