What file is Hiberfil.sys?

What's the Hiberfil.sys file? What does Hiberfil.sys mean?

Today, small series inadvertently saw in the forum Hiberfil.sys file, although small make a fuss has been so long but still do not know what this document is, today to take this opportunity not only to learn from themselves, but also to friends to help us introduce, to help you grow a little insight.

Hiberfil.sys is the system hibernation file, which is the same size as the computer's physical memory, it can be deleted (but not manually removed, in the next installment, we will describe the specific method of deletion).

In fact, when the computer is in hibernation, everything in memory will be saved to the hard drive and the computer will be shut down. After the computer is turned back on, all programs and documents that are open when you shut down the computer are restored to the desktop. That is, when you put your computer into hibernation, Windows writes all the memory content to the Hiberfil.sys file before shutting down the system. Then, when you turn the computer back on, the operating system uses Hiberfil.sys to put all the information back into memory, and the computer returns to its state before it shuts down. However, Windows left a Hiberfil.sys file on the hard drive, even if the file was no longer needed.

Warm tip: Hiberfil.sys files can be very large, is a disk Defragmenter can not defragment the special system files. As a result, the presence of file Hiberfil.sys will prevent Disk Defragmenter from doing a thorough collation. If the Hibernate option is not used frequently we can close the file, and in the next installment we will describe the specific method of closing.