Monday, April 25, 2011

Erasing the swapfile at shutdown in Windows

This article describes the registry modifications required to implement removal of the swapfile in a Windows OS at shutdown.
http://support.microsoft.com/kb/314834

It's just one registry key. Here's the relevant section from the kb article.
Change the data value of the ClearPageFileAtShutdown value in the following registry key to a value of 1:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
If the value does not exist, add the following value:
Value Name: ClearPageFileAtShutdown
Value Type: REG_DWORD
Value: 1



This is handy for when you can't be worried about moving it from place to place, like in a migration. Also can help when doing a Storage Migration; lots less data to move.

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