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Warning: You may lose data if you make hibernation unavailable and a power loss occurs while the hybrid sleep setting is turned on. When you make hibernation unavailable, hybrid sleep does not work. The Hiberfil.sys hidden system file is located in the root folder of the drive where the operating system is installed. The Windows Kernel Power Manager reserves this file when you install Windows. The size of this file is approximately equal to how much random access memory (RAM) is installed on the computer.

:: To disable hibernation mode:
powercfg.exe /hibernate off

:: To re-enable hibernation mode:
powercfg.exe /hibernate on