Clear system page file at shutdown

Virtual memory support in Windows NT uses a system page file to swap pages from
memory of different processes onto disk when they are not being actively used.
On a running system, the page file is opened exclusively by the operating system
and is well-protected. To ensure that any sensitive information from process
memory is not left on the hard drive and thus not available to a user booting
the PC with another operating system, apply the following Windows NT / Windows
2000 / Windows XP registry hack:

Key: SYSTEM\CurrentControlSet\Control\SessionManager\Memory

Name: ClearPageFileAtShutdown
Value: 1

Note that this protection only works with a clean shutdown. The
ClearPageFileAtShutdown is part of the normal shutdown process when this value
is set. Valuable for shared PCs or if you have something very valuable needing

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