How to delete hiberfil.sys (and disable hibernate)
Windows creates a file
hiberfil.sys in root of the C drive. This is
hidden system file which Windows dumps the contents of memory to when
the system hibernates. The idea is that hibernating can save time both
on shutting down and on start-up.
c:\hiberfil.sys file and hibernation go hand in hand. You cannot
hiberfil.sys file without disabling hibernation, and you
cannot have hibernation enabled with Windows creating the
If you do not use the hibernation feature of Windows then by turning
of hibernation the
hiberfil.sys file should automatically be removed.
To disable hibernation (In Windows Vista and Windows 7):
- Start > All Programs > Accessories, right click on "Command
Prompt" and select "Run as administrator".
powercfg -hibernate off
and press Return.
That should be it. You can now close the "Command Prompt" window, and
you should find that the
hiberfil.sys file has disappeared.
Should you ever need to restore the hibernation feature then follow
the same procedure but instead use: "
powercfg -hibernate on".
If you get the error:
You do not have permission to enable or disable the Hibernate
This will be because you did not open the "Command Prompt" with "Run
These notes have been tested with Windows Windows
Vista and Windows 7, and may also apply to other versions of Windows.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant.