Tuesday, June 23, 2009

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What Is Hiberfil.Sys And How To Delete Hiberfil.Sys File

To avoid some of the drawbacks of Windows Sleep power-saving mode, you can hibernate your PC. As described in “How To Enable Hibernation In Windows Vista,” Hibernate saves a copy of everything in your PC’s memory (RAM) onto your hard disk before it shuts down.
Windows uses the file hiberfil.sys, stored in the root folder of your hard disk, to hold your hibernation data. Because it must hold everything in memory, its size is the same as the amount of installed system memory. Have 2 GB of RAM? You’ll see a 2 GB hiberfil.sys file on your hard disk that Windows won’t let you delete.

Windows enables the operating system to control power to your computer and peripheral devices. Hibernate saves an image of your desktop with all open files and documents, and then it powers down your computer. When you turn on power, your files and documents are open on your desktop exactly as you left them.
Windows creates the hiberfil.sys file automatically when you turn on the Hibernate feature; the only way to delete the file is to turn off Hibernate

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To do this simply in windows vista, open a Command Prompt window in administrator mode  (right click on command prompt in "All Programs -> Accessories -> Command Prompt" and choose run as administrator) and type this command at the prompt (refer screen shot below):
powercfg /hibernate off 
Then press Enter.
[Read In Detail: How to Turn Off Hibernation In Windows Vista]
If the command returns you to the prompt with no message, the change was successful, and hiberfil.sys should be gone.
If hiberfil.sys is still there, hibernation may’ve already been turned off, and the file may be left over from an older version of Windows. Another way to delete the file is to use the Disk Cleanup tool (cleanmgr.exe); just select the drive containing the file, place a checkmark next to Hibernation File Cleaner in the Files to delete list, and click OK. Also Read:How To Use And How To Disable Disk CleanUp In Windows.

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Haja Peer Mohamed H, Software Engineer by profession, Author, Founder and CEO of "bench3" you can connect with me on Twitter , Facebook and also onGoogle+

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