On a Microsoft Windows system, you can enable the hibernation feature using the command
powercfg /hibernate on or
pwercfg /h on.
When you hibernate a Microsoft Windows system, the contents of memory are
written to a file, hiberfil.sys, in c:\. If a system
has been hibernated, when you power it back on, the contents of
hiberfil.sys are read from disk into memory, so bringing a system
up from hibernate mode will take longer than bringing it back from sleep mode,
which is a power saving mode where the system state is saved to memory.
To check if hibernate mode is available, you can issue the command
powercfg /availablesleepstates at a command prompt. E.g., the
following example shows the output of the command on a Microsoft Windows 8
system on which hibernate mode has been enabled.
C:\>powercfg /availablesleepstates
The following sleep states are available on this system:
Standby (S3)
Hibernate
Hybrid Sleep
Fast Startup
The following sleep states are not available on this system:
Standby (S1)
The system firmware does not support this standby state.
Standby (S2)
The system firmware does not support this standby state.
Standby (Connected)
The system firmware does not support this standby state.Since hibernate mode is enabled on the system, I can use shutdown /h
at a command prompt on the system to hibernate he system, even though
"hibernate" doesn't appear as one of the options when shutting down the system
through the Windows GUI
The example below shows the output from the
powercfg /availablesleepstates command issued on a Windows Server
2012 Essentials system after hibernate mode was enabled.
C:\>powercfg /availablesleepstates
The following sleep states are available on this system:
Hibernate
Fast Startup
The following sleep states are not available on this system:
Standby (S1)
The system firmware does not support this standby state.
An internal system component has disabled this standby state.
Graphics
Standby (S2)
The system firmware does not support this standby state.
An internal system component has disabled this standby state.
Graphics
Standby (S3)
An internal system component has disabled this standby state.
Graphics
Standby (Connected)
The system firmware does not support this standby state.
Hybrid Sleep
Standby (S3) is not available.References:
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Enabling hibernation on a Windows Server 2012 Essentials system
Date: February 8, 2015
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