So What is hiberfil.sys Anyway?

• So What is hiberfil.sys Anyway?

Windows has two power management modes that you can choose from: one is Sleep Mode,The other is Hibernate mode, which completely writes the memory out to the hard drive, and then powers the PC down entirely, so you can even take the battery out, put it back in, start back up, and be right back where you were.
Hibernate mode uses the hiberfil.sys file to store the the current state (memory) of the PC,
http://www.howtogeek.com/howto/15140/what-is-hiberfil.sys-and-how-do-i-delete-it/