Here's our Windows XP Tip for.. May 14, 2003
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The Size of the Swap File
Warning, making use of this tip is not recommended for computer novices.
If you've ever noticed the size of your swap file increasing and your computer constantly waiting on your hard drive, you've probably asked how you could control it all. Though it is possible to modify the size of the swap file, we don't recommend it unless you are a computer expert; or are willing to assume total responsibility for the activity.
The swap file is the portion of your hard disk that Windows uses for virtual memory. Whenever your actual RAM is exceeded, Windows uses the swap file to move items in and out of RAM. This operation happens a lot more often than you think, and interfering with the size of the swap file could cause some of your memory-hogging programs to run poorly.
It is possible, however, to move the swap file to another disk or partition you may have, if that helps to free up disk space on your main drive.
To do this, right-click on the My Computer icon and choose Properties. Select the Advanced tab and click the Settings button in the Performance section. Click the Advanced tab. Click the Change button in the Virtual Memory section.
Click on the drive letter you wish to modify and then make the changes in the fields that become editable. Click the Set button when you are done, and then OK until you're back to the desktop.
Windows XP will want to restart when you're all done so that the changes can take effect.