Stop using a SATA drive

[Quartz]

> Electric motors will act as generators: the trick with modern drives is
> that they use the inertia of the spinning disk platters to generate
> sufficient power to move the heads to the parked position when the
> external power goes out.

Hmm.... ok, that's different from how it was explained to me. I was also 
told that this procedure was faintly harder on the drive than issuing a 
real 'park' command (in the sense that it's basically slamming the 
emergency stop button). What's your take on that?