How to Change Windows Virtual Memory (pagefile.sys File Size)

To change windows Virtual Memory follow these step:
  1. Open System by clicking the Start button, Right-Clicking Computer, and then clicking Properties.
  2. In the left panel, click Advanced system settings.  If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
  3. On the Advanced tab, under Performance, click Settings.
  4. Click the Advanced Tab, and then, under Virtual Memory, click Change.
  5. Uncheck the Automatically Manage Paging File Size for all Drives Checkbox.
  6. Under Drive [Volume Label], click the drive that contains the paging file you want to change.
  7. Click Custom Size, type a new size in megabytes in the Initial size (MB) or Maximum size (MB) box, click Set, and then click OK.

Note

Increases in size usually don’t require a restart for the changes to take effect, but if you decrease the size, you’ll need to restart your computer. We recommend that you don’t disable or delete the paging file.

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