Recently, I had to move Pagefile.sys from C: drive to another drive on a server to free up some space. Page file is used as a virtual memory in Windows. Generally, you can find on C:\Pagefile.sys . It is a hidden file and you won’t be able to see it until you changes settings in Windows Explorer not to hide protected operating system files. To move the Pagefile to a new drive, follow these steps. You can perform these steps on any Windows Vista, or Windows 7 on wards or Windows server 2003 on wards. Go to Control Panel and then System and Security . Now, click on Advanced system settings on the left side column. System properties box will appear, click on Advanced tab. Under Performance , click on Settings … button Performance Options box will appear, click on Advance tab. In Virtual Memory section, click on Change… button Virtual Memory box will appear. In this box, untick Automatically manage paging file size for all drives Select the drive letter C: