Editing Memory paging (section)

====Windows 3.x and Windows 9x====
Paging has been a feature of [[Microsoft Windows]] since [[Windows 3.0]] in 1990.  Windows 3.x creates a [[hidden file]] named <code>386SPART.PAR</code> or <code>WIN386.SWP</code> for use as a swap file. It is generally found in the [[root directory]], but it may appear elsewhere (typically in the WINDOWS directory). Its size depends on how much swap space the system has (a setting selected by the user under [[Windows Control Panel|Control Panel]] → Enhanced under "Virtual Memory"). If the user moves or deletes this file, a [[Blue Screen of Death|blue screen]] will appear the next time Windows is started, with the [[error message]] "The permanent swap file is corrupt". The user will be prompted to choose whether or not to delete the file (even if it does not exist).

[[Windows 95]], [[Windows 98]] and [[Windows Me]] use a similar file, and the settings for it are located under Control Panel → System → Performance tab → Virtual Memory. Windows automatically sets the size of the page file to start at 1.5× the size of physical memory, and expand up to 3× physical memory if necessary. If a user runs memory-intensive applications on a system with low physical memory, it is preferable to manually set these sizes to a value higher than default.