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How To Reduce Hiberfil.sys File Size

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Hiberfil.sys File Size

JEAN SIMARD asked on March 10, 2013. Status: Answered & Closed.

How To Reduce Hiberfil.sys File Size

» I would like to reduce my hiberfil.sys from the default 75% to 50%. I am following the instructions offered in this document from Microsoft: http://msdn.microsoft.com/en-us/windows/hardware/gg463229. I'm logged in as administrator and run an elevated command prompt and I see C:\Windows\system32> I type powercfg -H -50 or powercfg -H 50. I receive Hibernation state must be on or off. I tried setting UAC to zero. In this case I get hibernate is not recognized as an internal or external command, operable program or batch file. What part am I missing?


Best Answer

» Normally located at C:hiberfil.sys, its size can vary from 250MB to over 2GB. You try to delete the file - it's not a good idea to delete files you don't understand - but Windows won't oblige anyway. That's why you are here. Windows XP has a feature that is not very well documented and it will be totally new to users of older systems such as Windows 95 or 98. This feature introduced to most users for the first time in XP is called Windows hibernation. Instead of shutting down and restarting your computer, Windows takes a snapshot of everything running on your system, copies it to the hard drive and then turns off most of your hardware. To wake up from hibernation you normally move the mouse or hit the spacebar on the keyboard.

The blue screen Hiberfil.sys or Hiberfil.sys address error will be familiar to anyone who has used the Windows OS for any length of time. It causes immediate loss of data and can become a persistent problem for Windows OS users.

The error is usually caused by a corrupt or invalid registry entry. The registry is the part of the hard drive that determines how programs are run on the PC, and where their information is stored. Entries in the registry can be corrupted by viruses/Trojan(TrojanDownloader:Win32/Beebone) and other malware, therefore, you need to run an antvirus scan and remove the virus. And then restore the performance of your system to normal by a profession fixer.

One of the best utilities available for dealing with blue screen errors and other problems concerning the .sys files is DLL Suite, although it can complete several other functions. This is in fact a one-stop-shop for sorting out all your PC issues and restoring it to its former pristine condition and optimal performance.

ROSE SMITH replied on March 16, 2013


All Answers:

  1. EARL TERRY replied on March 10, 2013: » You may use another user account and run the command in Administrative Command prompt and check if it helps.

  2. ARIC ALBERTSON replied on March 11, 2013: » You could turn off Hibernate all together if you wish.

    powercfg.exe -h off from an elevated command prompt.

  3. CHARLOTTE MORPHIS replied on March 12, 2013: » My reaction is that you have a disk space problem and attempting to reduce the size of hiberfil.sys is not a solution. You either use hibernation and take the disk space hit or not use hibernation.

    Perhaps if you gave details of drive / partition sizes and available free disk space a solution could be found by tackling the problem in a different way?

  4. KEVIN ZANDER replied on March 13, 2013: » That's very odd you can't turn off the Hibernate feature. Are you sure you're running an elevated command prompt? Even if you're in an Administrator account, you have to right-click a shortcut to the command prompt and choose "run as administrator" to get an elevated prompt.

  5. ROLAND TANG replied on March 15, 2013: » Sometimes when the free space gets reduced automatically, it puzzles me and a few times even makes me determined to get that free space back!! This is what motivates me to do things like tweaking pagefile, hyberfil etc. I don't want anything less. Also I have never hibernated my PC in my life and don't intend to do so in the future (except basic thing like fast start-up in WIN*). Moreover, people so interested in tweaking system files like these two would mostly have tried the de-frag, ccleaner, registry cleaner apps already (at least I did).

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