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Is it safe to disable hibernation and delete Hiberfil.sys?

Go to solution Solved by HairlessMonkeyBoy,

Yup. I've done this many times. The file will delete automatically when you disable hibernation.

The hiberfil.sys file on my main Windows drive is growing excessive in size and is now almost 20GB. I don't mind Windows using some memory to help my PC start up faster, but it's getting a little out of hand. Even my pagefile.sys is getting to almost 5GB, and I have 32GB of RAM. When I'm not gaming or dabbling in Krita with my drawing tablet, I technically have 23GB of RAM free.



Ryzen 5 3600

32GB DDR4 3200 C16

RTX 2060

500GB Samsung 970 Evo (Windows) + other various storage for games and such.

Windows 10 Pro 64-bit

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Yup. I've done this many times. The file will delete automatically when you disable hibernation.

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Yes it's safe to do if you don't want hibernation.

Ryzen 2600 @ 4ghz | Radeon RX580 | 32gb HyperX 3200mhz | 500gb Samsung PM981a | 5 TB HDD | Corsair CX450

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Yes, it is safe. To remove it, you'll need to disable hibernation, and restart your system. This is done via command line:

powercfg /h off


To turn it back on, if you change your mind (restart your system after):

powercfg /h on


Keep in mind that disabling hibernation will also disable Fast Startup feature.

So, Windows will start slower than normal from Shutdown state.



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6 hours ago, GoodBytes said:

Keep in mind that disabling hibernation will also disable Fast Startup feature.


There is a way to disable hibernation without losing Fast Startup. You can set the hibernation file type to Reduced, this should set the default size of it to 20% of physical memory.


powercfg /h /type reduced


If the hibernation file is already set to a custom size larger than 40% of physical memory you need to run this first


powercfg /h /size 0


Also if Hibernation is still required but you don't want the file to be as large you can set the size of the Full hibernation file to as low as 40% of total physical memory using the above command and specifying your desired size.


@Taco Annihilator

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