Why is my "Enable Hybrid Boot" option grayed out in Windows 8, and how can I enable it?
Performing a powercfg /a
results in the following error being reported:
Hybrid Sleep: The hypervisor does not support this standby state.
“Enable Hybrid Boot” is grayed-out when it is unavailable for some reason.
From What is Hybrid Boot in Windows 8 and how does it work? :
To use Hybrid boot, your system must have a hibernation file and the drivers must support hibernation. Hybrid boot is not available if you run Windows 8 in a Virtual Machine.
To change Hybrid Boot in spite of it being unavailable, you will need click on "Change settings that are currently unavailable", but this will probably have no effect (or worse) :
Hybrid Boot is disabled when ...
... you have Hibernation disabled, you can enable it by executing powercfg /h on
.
... your computer doesn't support Hibernation, this is rare but possible.
... your drivers don't fully support Hibernation, often seen when you use Virtualize or VHD boot.
It is best to run your OS natively and make sure all your drivers are installed, WHQL and up-to-date.
More explanation on why it doesn't work can be received by using powercfg /a
.
In case you get the error The hypervisor does not support this standby state
, you need to uninstall Hyper-V to fix this error and reboot your system which should make the grayed out option available to you...
powercfg /a
so I'll give ya the bounty =)
Nov 27, 2011 at 23:39
Ahh I finally figured it out. :)
There were two steps to solving this problem:
I needed to uninstall Hyper-V from the Windows features (in Programs and Features in the Control Panel).
This is pretty surprising, considering that I was not supposed to be running on a hypervisor, and that the script from here indeed said my baseboard manufacturer was Sony, not Microsoft.
I manually re-enabled hybrid boot through changing the following registry setting:
Under
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Power
I changed the DWORD
named HiberbootEnabled
to 1
.
Indeed, after the change, boot was much faster, but now it didn't give me the option to boot into another OS like before. (Instead, Windows 8 took over, and asked me what I wanted to do.) The "shutdown" was slightly slower, though.
It is already enabled. The boot is much faster because the system files are stored from ram to disk like in the usual hibernation, but the services are restarted on reboot. That gives the system a real fresh start with the speed of hibernation.
Hybrid Sleep: The hypervisor does not support this standby state.
Which is funny, because I don't even believe I'm running on a hypervisor...