what is useful about the files named Hiberfil.sys under root directory

This is big file under root directory named Hiberfil.sys and it is a so big file and can not delete.
U must use the "power management" function of resting. resting or STD, and the elements is the same: save all the memory information in this file and when windows restrat , recovery it. and the size of this file is same with your physics memory content.
if you must needs delete it, there is one way. cancel the resting function

 

Hey Jacky,

The file is for reserving space on your hard drive for use when your machine is in hybernate.

If you do not use hybernate, you can turn off hybernate in Control Panel>Power options>Hybernate Tab>uncheck "enable hybernate ".

Then you can delete the file Hiberfil.sys.

Do you understand what "Hybernate" means?