Hi,

I was wondering if Windows 8.1 properly supports PM2/PUIS. I tried enabling it via jumper on my WD HDD which resulted in it completely disappearing from the disk management after entering energy saving once. I'm not sure my mainboard supports it, but before trying to find a controller that actually works some information if Windows even supports it would be useful.

Regards,

Hidden

I don't think it suits for a primary/boot/OS drive, because of the nature of PM2/PUIS. It might be ok for a secondary drive?

http://www.tomshardware.com/forum/276970-32-jumper-setting

Well of course for a secondary drive, this wouldn't make any sense on a boot drive.

Hi,

I dont think Windows 8.1 really support on this feature since the implementation of PUiS requires input from the basic input/output system (BIOS). This system, which is a fundamental part of the PC and other types of hardware.

But interesting, according to your description, similar issue occurred on Windows 10 Technical Preview or Windows Server Technical Preview due to maximum BIOS does not support Power up In Standby (PUIS).

https://support.microsoft.com/en-us/kb/3021937

https://social.technet.microsoft.com/Forums/en-US/54b37f93-f4c8-462b-8dfc-4708e2147c64/9879-sleep-wd-hdd-issue-puispm2?forum=WinPreview2014General

Regards,

D. Wu

Support for PUIS is affected much more by the storage controller and storage controller driver than by the operating system. Support in the system firmware (BIOS/UEFI) is also an important factor.

Provided that the aforementioned items all support PUIS, Windows 8.1 does not present any additional compatibility issues. Without support from these items, Windows 8.1 cannot make use of a PUIS enabled drive.

A common example where PUIS is used with Windows 8.1 (or even Windows 7 or older) is where an add-on storage controller (e.g. a RAID card) is used and leverages staggered spin up to ensure that all disks to not spin up simultaneously. In this scenario the PUIS and staggered spin up array can even be used as a boot volume.

Brandon
Windows Outreach Team- IT Pro
Windows for IT Pros on TechNet