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How to Enable/Disable Hibernation in Windows Vista

Windows Tips

How to Enable/Disable Hibernation in Windows Vista

When Windows is switched to hibernation mode, Windows saves the current state into a file called hiberfil.sys. This files size is very huge and will extend to several GB. In case you are not using hibernation, you can disable it to save hard disk space. To disable hibernation, open Start-> All Programs-> Accessories-> Command Prompt. Right click and select Run as Administrator in case you are not logged in as admin account.

In the command prompt type “powercfg.exe –h off” to turn off hibernation (without quotes).

command prompt

In case you want to enable hibernation, type “powercfg.exe –h on” in the command prompt.

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Nirmal is a Technology Blogger and a Microsoft MVP in Windows. He can be contacted at You can find Nirmal on , and .



  1. abhishek

    August 14, 2008 at 12:44 pm

    quick and easy

  2. c0d3r

    August 15, 2008 at 12:07 am

    Nice 🙂 Thx.. really wanted to save the space huberfll was taking.. didnt know how to 😀

  3. Nesh

    December 20, 2008 at 7:19 pm

    thanks alot…..i was searching the how to hibernate my laptop using vista…..i got it…


  4. bLizzARd

    November 2, 2009 at 8:03 pm

    Thanks a lot.. Very useful.. ^_^

  5. Pingback: Save Energy on Windows with Smart Power

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