What Is Pagefile.sys? How to Delete Pagefile From Windows


Have you ever taken a look at your computer’s hard drive and wondered what pagefile.sys is? It’s a system file, but it can take up a lot of space on your computer. So, does pagefile actually need to be there? Can you delete it without any repercussions? In this blog post, we will explain what pagefile.sys is and how you can delete it from Windows if it’s taking up too much of your computer’s resources. We will also go over the dangers associated with deleting pagefile as well as how to manually free up disk space. Read on to learn more!

What is pagefile.sys?

Pagefile.sys is a system file in Microsoft Windows that allows the operating system to manage virtual memory. It is used by the operating system to store data that is not being used by programs in memory. When programs need more memory than is available, they can use the pagefile.sys to swap data out of memory and onto the hard disk. This process is known as paging.

The pagefile.sys file is located in the root directory of the Windows partition. The size of the pagefile.sys file is typically 1.5 times the amount of physical RAM on the computer. For example, a computer with 4 GB of RAM would have a pagefile.sys file that is 6 GB in size.

How does pagefile work?

When a computer is first turned on, the operating system loads into memory. This is where the operating system and all other programs run. The size of the operating system and all the programs installed on the computer can vary, but it’s not uncommon for the operating system and everything else to take up several gigabytes of space.

Since the size of memory is limited, there needs to be a place where data can be stored when it’s not being used by the operating system or any programs. This is where pagefile comes in. Pagefile is a file that Windows creates automatically that is stored on your hard drive.

When Windows needs to free up memory, it moves data that hasn’t been used recently from memory to pagefile. When data is needed again, Windows moves it back from pagefile to memory. This process happens automatically and transparently in the background so you don’t have to worry about it.

One thing to keep in mind is that because pagefile is stored on your hard drive, it’s much slower than if it were stored in memory. This means that if your computer runs out of memory and starts using pagefile heavily, you’ll likely notice a slowdown in performance.

How to delete pagefile from Windows?

Assuming you would like tips for deleting the pagefile from Windows:

1. Open the Control Panel. Click on System and Security, and then under System, click on Advanced system settings.
2. In the Advanced tab, under Performance, click Settings.
3. In the Performance Options dialog box, click the Advanced tab.
4. Under Virtual Memory, click Change.
5. Select No paging file and then click Set. You will be prompted to restart your computer to complete the task; select Restart now to do so immediately, or Close to restart later.

Should you delete pagefile from Windows?

Windows uses a file called pagefile.sys to store information about open programs and files. When you delete this file, Windows can no longer access the information and must recreate it, which can cause performance issues. Additionally, if you have an SSD, deleting pagefile.sys can help improve your computer’s speed and responsiveness.

How to Configure Pagefile.sys in Windows

Windows uses a file called pagefile.sys to store information about active programs and data that is used frequently. This file is also known as a “paging file” or “swap file.” When physical memory (RAM) becomes full, Windows moves data from RAM to the pagefile.sys file. This process is known as “paging.” Paging helps improve system performance by using available physical memory more efficiently.

When configuring pagefile.sys in Windows, there are two main settings to consider: the initial size and the maximum size. The initial size is the amount of space that will be allocated for the pagefile when Windows first creates it. The maximum size is the maximum amount of space that can be allocated for the pagefile. It’s important to choose an initial size and maximum size that are appropriate for your system and usage patterns.

If you’re not sure what settings to use, you can try starting with an initial size of 1 GB and a maximum size of 4 GB. You can always adjust these settings later if you find that your system needs more or less paging space.

To configure pagefile.sys in Windows, follow these steps:

1) Open the Control Panel and go to System and Security > System > Advanced system settings > Performance Settings > Advanced tab.
2) Under Virtual memory, click Change…
3) Select Custom Size and enter an Initial Size and Maximum Size for your pagefile (in MB).
4) Click Set and then OK.
5) Restart your computer for the changes to take effect.


In conclusion, pagefile.sys is an important Windows system file that helps to manage virtual memory on your computer. By understanding what it is and how it works, you can make the decision whether or not to delete the pagefile from your computer in order to free up space. If you choose to do so, be sure to understand the risks involved as well as proper steps for deleting this critical system file. With a better understanding of pagefile.sys and its related processes, you will have a clearer idea on how best use this valuable resource in managing virtual memory on your computer.

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