How to fix Full Disk 100% error on Windows 10

Full Disk error is an error that many people have encountered when using Windows 10 recently. This error often causes jerks, lags, and computer freezes, which is very annoying. So how to fix this error?

What is Full Disk Error?

Full Disk error is a condition where the drive is reported to be in 100% operating status (Disk 100%). This condition can be recognized as follows: every time you open Task Manager to view detailed activities, the Disk tab is always red, with an index of 99%, 100% or always occupying 90% or more. This error has existed since Windows 8 was released. However, until now, when Windows 10 has been released with many updates, this error has not been completely fixed by Microsoft. This condition causes the computer to slow down and freeze when operating. If you are experiencing this error and want to find a way to get rid of the discomfort caused by the Full Disk error, you can follow the methods below. 

How to fix Full Disk 100% error on Windows 10

Method 1: Set virtual RAM manually instead of default Automatic mode

Leaving Ram in Automatically mode is one of the reasons why the computer gets Full Disk error. So instead of leaving it in Auto mode, you should set virtual RAM.

Step 1: In the Windows search box, type Performance  then select Adjust the appearance and performance of windows

Step 2: Switch to the Advanced tab , select the Change box

Step 3:

In the  Virtual Memory tab , uncheck  Automatically manage paging file size for all drives . Select the drive where  your operating system is installed (usually drive C) . Then check  Custom size .

In  Maximum size and Initial size . You set the virtual RAM to 1/2 of your real RAM.

Method 2: Defragment hard drive

If you have installed Windows 10 for a long time, defragmenting the hard drive is something you should do regularly to avoid full disk errors that can harm your computer.

Step 1: Open This PC (My Computer) then select any hard drive

Step 2: Select Properties then select Tools . Select the hard drive containing the operating system to start defragmenting.

Step 3: Select Optimize to start the process and click Ok when finished.

Method 3: Upgrade SSD

SSD hard drives have much higher data reading and writing speeds than HDD hard drives, so if you have tried the above methods but they are not effective, this is the last option to help you solve the Full Disk problem. Although it will cost more, it is guaranteed that this is a 100% successful method, and it will also help your computer run much faster.

Lesley Montoya

Update 16 January 2025