Windows Legacy OS forum

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hiberfil.sys and can't defrag, using hibernate?

by reefurbb / November 4, 2004 9:27 PM PST


If you use the Windows XP's Hibernation feature on your laptop,
you may
want to delete the Hiberfil.sys file from the hard disk before
defragmenting. When you put your computer in hibernation,
Windows XP
writes all memory content to the Hiberfil.sys file before
shutting down
the system. Then, when you turn your computer back on, the OS
uses the
Hiberfil.sys file to put everything back into memory, and the
resumes where it left off. However, Windows XP leaves the
file on the hard disk, even though it's no longer needed.

The Hiberfil.sys file, which can be very large, is a special
file that Disk Defragmenter cannot defragment. Therefore, the
of the Hiberfil.sys file will prevent Disk Defragmenter from
a thorough defragmenting operation.

Follow these steps to remove the Hiberfil.sys file from the hard

1. Access the Control Panel and double-click Power Options.
2. Select the Hibernate tab in the Power Options Properties
dialog box.
3. Clear the Enable Hibernation check box and click OK.

As soon as you clear the check box, Windows XP automatically
the Hiberfil.sys file from the hard disk. Once you complete the
operation, you can re-enable the Hibernation feature.

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