Spin Down Hard Disk Programmatically on Windows?

Question

How do you request Windows to spin down a hard disk programmatically? Is there any user-mode function I can call (or kernel-mode function to call or IRP to send) in order to mak

Answer 1

I believe the Devcon Command line utility should be able to accomplish what you need to do. If it does - the source code is available in the Windows Ddk.