Policy
Turn Off the hard disk (plugged in)
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.
Pack Microsoft Windows
Category System / Power Management / Hard Disk Settings
Policy ID
39d84ca2b93c Internal name
DiskACPowerDownTimeOut_2 Registry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Power\PowerSettings\6738E2C4-E8A5-4A42-B16A-E040E769756E\ACSettingIndexPolicy notes
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.