How to Change the Hibernation File Size
When your computer goes into hibernate the files in memory (RAM) are saved into a file on the hard disk. This file is called hiberfil.sys and by default is set to be 75% of your total RAM size. You can adust this if you need to.
Adjust Hibernation File Size
- Open a command prompt window as an Administrator
- Type the following command, when 75 is the percentage you want
powercfg.exe /hibernate /size 75
Let me know if this helped you! Leave a comment.

Many thanks for posting this. It’s exactly what I needed.