When you use the device for a long time, you will inevitably run out of storage space. While there are ways to fix such low memory issue, we bet you didn’t know that there are some files of system reserve memory that can be deleted to free up storage space. One such file is called hiberfil.sys.
Hiberfil.sys is a system file that can be safely deleted to free up space. As you read this article, you will understand what this file is used for and how you can delete it to free up space.
What is the hiberfil.sys file?
If you’ve ever come across power modes on Windows, you’ve probably come across Hibernate mode. This is a power saving feature that saves the current session to the hard disk before shutting down the PC. After starting it, you can continue your session without having to reopen applications and programs.
Now, your computer needs a designated space to store all the data related to this session. This is why we have hiberfil.sys files. Furthermore, these program data must be transferred from RAM to the hard disk, where they are stored.
The file size is close to the size of the RAM and usually takes up about 50-75% of the RAM size. This means it takes up many gigabytes of storage. If you’re curious to know how much space it takes up, move on to the next section.
How much storage space do hiberfil.sys files take?
Step 1: Open the Settings application on Windows and click on the Storage item.
Step 2: Now go to Show more categories.
Step 3: Select System & reservation.
You can now see how much space the hibernate file takes up on your system. It takes about 6 GB on my system. It may be more or even less on your computer depending on the device and configuration.
Is it safe to delete hiberfil.sys?
Simply put, yes, it is safe to delete the hibernate file unless you are definitely not using hibernation. So you can delete files easily and free up a few gigabytes of storage in your system.
Now if you change your mind and want to choose hibernate at any time, you can also easily restore this file.
In the later sections of the article, we have provided a step-by-step process to delete and restore files. Furthermore, both delete and restore require nothing but a command prompt. So the procedure can be considered safe.
Should you disable hibernation?
The main difference between Sleep and Hibernation is that hibernation uses significantly less power. So, if this feature seems useful, we recommend that you do not delete hiberfil.sys.
If this feature is not needed and if it is important to free up some storage space, go ahead and delete those files. Furthermore, if you are a user with admin rights, you can go to Command Prompt and delete those files.
How to delete hiberfil.sys
We already covered using the Command Prompt to delete files. Here is a step by step procedure to do so.
Step 1: Find Command Prompt from the start menu.
Step 2: Right click and select ‘Run as administrator.’
Step 3: Once opened, type powercfg -h off and press enter.
That’s it. Hibernation is now effectively disabled and you can see that it’s also hidden in system files. This also saved me the 6 GB I mentioned earlier.
How to restore hiberfil.sys
Restoring hiberfil.sys is also simple.
If you are using Windows 7, 8, 9, 10 and 11: Open Command Prompt as administrator and type Powercfg – h is on. This will trigger hibernation back to your PC.
If you use Windows XP: Open Control Panel, select Power Options, select Tab Hibernation, and uncheck the box to enable hibernation.
This is how you can delete hiberfil.sys in Windows. If you have more questions, check out the section below where we’ve answered some common questions you may have.
frequently asked Questions
1. What happens if I delete the Hibernate file?
When you delete the hibernate file, you cannot use the hibernate option on your system. So your power options will be restricted to sleep, shutdown, and reboot only.
2. How to reduce hiberfil.sys file size in Windows?
You can reduce the size using Command Prompt in administrator mode. However, there is a minimum percentage of RAM that hiberfi.sys must be in size and you cannot reduce it any further. This is usually around 40-55%. You need to type Powercfg –h –size percentage. For example, if I need to reduce it to 40%, then type Powercfg –h –size 40.
3. Can I move hiberfil.sys to another drive?
Unfortunately, the file is only persisted on the drive where Windows is installed. Therefore, you cannot move or partition the hiberfil.sys files.
Safely delete hibernate files
Here’s everything you need to know about hiberfil.sys, how and why you need to delete it. We hope this article has helped you free up considerable storage space on your device. Have more questions regarding your Windows device? Share them in the comments below.
Categories: How to
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