Clear Virtual Memory before shutdown

Determines whether the virutal memory pagefile should be cleared when the system is shut down. Windows  virtual memory support uses a system pagefile to swap pages of memory to disk when they are not being actively used. On a running system, this pagefile is opened exclusively by the operating system and is well protected. However, systems that are configured to allow booting to other operating systems might want to ensure that system pagefile is wiped clean when Windows 2000 shuts down. This ensures that sensitive information from process memory that might have made it into the pagefile is not available to an unauthorized user who has managed to directly access the page file.

When this tweak is enabled, it causes the system pagefile to be cleared upon clean shutdown. Enabling this security option also causes the hibernation file (hiberfil.sys) to be zeroed out when hibernation is disabled on a laptop system. When this tweak is disabled, the virtual memory pagefile is not cleared during system shutdown.

Operating System Windows 2000 / XP / 2003

• Open your Registry
• Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Memory Management
• Create or Modify if exists dword value called "ClearPageFileAtShutdown"
• Set 0 to disable or 1 to enable this tweak.
• Restart windows for setting to take effects