Turn Off the hard disk (plugged in)

Supported on: At least Windows Vista

Registry

HKLM Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E

Options

ACSettingIndex decimal - range ?-4294967295

Description

This policy setting specifies the period of inactivity before Windows turns off the hard disk. If you enable this policy setting, you must provide a value, in seconds, indicating how much idle time should elapse before Windows turns off the hard disk. If you disable or do not configure this policy setting, users can see and change this setting.