How can one disable an HDD in Device Manager without the HDD spinning up first? I'm trying to have a way to disable/enable an HDD on demand. It's on an nForce 410 controller. HotSwap! and revoSleep don't work in different ways. There's no "Safely Remove" icon for the HDD. If I enable RAID in the BIOS, the partitions in the drive don't appear. What does work is unmounting the volumes with mountvol and spinning down the HDD with HDDScan. But the HDD is still visible to lower-level software, like HDTune, which spins it up. I thought I'd just disable the HDD from Device Manager, but it's spun up before being disabled. After it's disabled I can't spin it down.