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Sunday, 4 May 2014


Windows has two power management modes namely Sleep Mode and Hibernate mode. Sleep Mode keeps the PC running in a low power state so you can almost instantly get back to what you were working on. Hibernate mode completely writes the memory out to the hard drive, and then powers the PC down entirely.
What is hiberfil.sys Anyway?
Hibernate mode uses the hiberfil.sys file to store the current state (memory) of the PC, and since it’s managed by Windows, you can’t directly delete the file. Since the file occupies too much space of the C: drive of hard disk, it may severely affect the speed and performance of the system.

Disable Hibernate (and Delete hiberfil.sys) in Windows 7 or Vista

Please right-click on the command prompt in the start menu, and then choosing Run as Administrator. Once you’re there, type in the following command:
powercfg -h off
You should immediately notice that the Hibernate option is gone from the Shut down menu.

Disable Hibernate (and Delete hiberfil.sys) IN WINDOWS XP

To enable or disable Hibernation in XP click Start Control Panel Power Options then click on the Hibernation tab.

Disable pagefile.sys (and Delete PAGEFILE.SYS) in Windows 7 or Vista

To delete the PAGEFILE.SYS file (or shrink the amount of space it takes up) follow these steps:

1. Right click on "My Computer" and then click "Properties".

2. On the resulting "System Properties" window, click on the "Advanced" tab and then the "Settings" button for "Performance".

3. On the "Performance Options" window, click the "Advanced" tab and then the "Change" button in the "Virtual Memory" section.

4. Click on the C: drive and then click on the option for "No paging file" and then hit "Set".

5. Click "OK" all the way back out and Restart the system. You should find the pagefile.sys file is gone.

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