Swap File

Windows and other operating systems have a limited supply of RAM with which to function. When they run out of RAM, they write some of the data that is in RAM to a file whose dedicated purpose is to cache RAM memory. This file is generically called a swap file, but more correctly called a page file. It is located in the root of the system drive, and its name is pagefile.sys on current versions of Windows.

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The swap file can be configured for a drive other than the boot drive to optimize performance. If you don’t see it on the root of the boot drive, you should examine other volumes to see whether it has been placed there. There is ...

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