PowerShell Script to set the size of pagefile.sys

Question

How to set the size of Page File on Windows(pagefile.sys) via PowerShell?

Answer 1

This is how we can update the size of pagefile.sys via PowerShell:

# PowerShell Script to set the size of pagefile.sys

$computersys = Get-WmiObject Win32_ComputerSystem -EnableAllPrivileges;
$computersys.AutomaticManagedPagefile = $False;
$computersys.Put();
$pagefile = Get-WmiObject -Query "Select * From Win32_PageFileSetting Where Name like '%pagefile.sys'";
$pagefile.InitialSize = <New_Value_For_Size_In_MB>;
$pagefile.MaximumSize = <New_Value_For_Size_In_MB>;
$pagefile.Put();

Execute the script as below:

PS> .\update_pagefile_size.ps1;

Answer 2

HERE is the solution THIS is to set C VOL page file to 16384MB, static and D VOL page file to System managed:

# PowerShell Script to set the size of pagefile.sys
# update_pagefile_size.ps1
$pagefile = Get-WmiObject Win32_ComputerSystem -EnableAllPrivileges
$pagefile.AutomaticManagedPagefile = $false
#$pagefile.put() | Out-Null
Gwmi win32_pagefilesetting | where{$_.caption -like 'C:*'}
$pagefileset = Gwmi win32_pagefilesetting | where{$_.caption -like 'C:*'}
$pagefileset.InitialSize = 16384
$pagefileset.MaximumSize = 16384
$pagefileset.Put() | Out-Null

if((Set-WmiInstance -Class Win32_PageFileSetting -Arguments @{name="C:\pagefile.sys";InitialSize = $pagefileset.InitialSize; MaximumSize = $pagefileset.MaximumSize} -EnableAllPrivileges -Verbose) -icontains "already exists"){
$pagefileset = Gwmi win32_pagefilesetting | where{$_.caption -like 'C:*'}
$pagefileset.Delete()
$pagefileset.InitialSize = 16384
$pagefileset.MaximumSize = 16384
Set-WmiInstance -Class Win32_PageFileSetting -Arguments @{name="C:\pagefile.sys";InitialSize = $pagefileset.InitialSize; MaximumSize = $pagefileset.MaximumSize} -EnableAllPrivileges
Gwmi win32_pagefilesetting | where{$_.caption -like 'C:*'}
}
$pagefileset = Gwmi win32_pagefilesetting | where{$_.caption -like 'D:*'}
$pagefileset.InitialSize = 0
$pagefileset.MaximumSize = 0
$pagefileset.Put() | Out-Null

Gwmi win32_pagefilesetting | where{$_.caption -like 'D:*'}
Set-WmiInstance -Class Win32_PageFileSetting -Arguments @{name="D:\pagefile.sys";InitialSize = 0; MaximumSize = 0} -EnableAllPrivileges | Out-Null

Write-host "Don't forget to reboot"
#shutdown /r /t 120 /c "rebooting to fix pagefile"