Fix 100% Full Disk error on Windows with some of tips

Full Disk  100%  error is probably no stranger to Windows 10/8.1 users. Not only on Windows 8.1, but you can get a 100% Full Disk error on Windows 7 or Windows 8. Every time you open Task Manager to view details of activities, the Disk tab is always red, with 99%, 100% index. or always account for 90% or more.

Full Disk error

This error still appears even when there are no background processes and the CPU is around 2-10%. So how to fix 100% Full Disk error, please refer to the following article of Network Administrator.

Full Disk error

Instructions to fix 100% disk error

1. Set virtual Ram manually instead of Automatically

Leaving Ram in Automatically mode is also one of the causes of your computer getting a Full Disk error. Instead of Auto mode, you should hard Set virtual RAM. How to do it as shown below:

Set virtual Ram manually

At the Virtual Memory Tab, uncheck the box for Automatically manage paging file size for all drives. Select the drive where your Operating System is installed (usually the C drive). Then tick Custom size.

In the Maximum size and Initial size section. You set hard for virtual Ram with 1/2 of your real Ram. Here I have 4GB Ram, so I will set half of 2GB Ram = 2048MB, same you do with your computer. 

Virtual Memory Tab

Finally click OK to save, and boot for the changes to take effect.

2. Handling Troubleshooting

Go to Control Panel, type Troubleshooting in the search box and click Troubleshooting.

Control Panel,Troubleshooting

A new window appears, double-click System and Security:

Control Panel,Troubleshooting

A new window appears, click System Maintenance .> Click Next

Control Panel,Troubleshooting

Then just let it work when the System Maintenance message appears, then click on Try troubleshooting as an administrator: 

System Maintenance windows

3. Turn off Maintenance

Also in Control Panel, select System and Security and Action Center:

System Maintenance windows
Next click on the arrow for Maintenance settings, select Settings:

System Maintenance windows
You tick Never check for solutions (Not recommended) and OK:

System Maintenance windows

4. Turn off Windows SmartScreen

Still in the Action Center window, select Change Windows SmartScreen Settings, then tick Don't do anything (Turn off Windows SmartScreen).

Windows SmartScreen

5. Turn off Service Superfetch

You press the Windows + R key combination to open Run and type Services.msc. Then find Superfetch (press S and search quickly), double-click it and select Disabled.

Service Superfetch

6. Turn off Service Windows Search

You also do the same as above but find Windows Search (press W and then search), double-click it and select Disabled.

Service Windows Search

7. Disable Disk Diagnostics: Configure execution level

You go to Run and type gpedit.msc. Then navigate to the following path:

Computer Configuration / Adminnistrative Templates / System / Troubleshooting and Diagnostics / Disk Diagnostics

Looking to the right window you will see Disk Diagnostics: Configure execution level, double click on it. 

Disk Diagnostics

Select Disabled and OK to save. 

Disk Diagnostics

8. Defragment your hard drive

Currently there are many software to defragment hard drives, but in this article I will use Windows tools.

Open This PC. Then you click on any partition, then choose Manage -> Optimize.

Defragment hard drive

Select the partition you want to defragment (should choose the drive that contains the HDH first) and then click Optimize to proceed with defragmentation and partition optimization.

Defragment hard drive

9. Use software to clean up trash and fix Registry errors

Open This PC, then you click on a partition where you installed the operating system (usually drive C). Right-click > Properties > Disk Cleanup.

Disk Cleanup

If you want to be faster, you can use CCleaner software

CCleaner Cleanup

10. Uninstall unnecessary software, turn off unnecessary software when Windows starts

- To remove unnecessary software, you can use built-in Windows functions or 3rd party software such as Revo Uninstaller, CCleaner, ..

unistall or change a program

- As for turning off the software, you can use the Startup tool in the Task Manager bar, then Disable the software that you find unnecessary (note not Disable the system's Driver).

Task Manager
11. Windows Update

Get Microsoft patches to fix your Windows.
Windows Update

12. Disable Tips About Windows

Sometimes in some cases, users can disable Tips About Windows to fix the error.

To disable Tips About Windows, go to Start => Settings => System => Notification & actions. Switch the Show me tips about Windows option to OFF and you're done.

Tips About Windows

13. Change Pagefile location

Pagefile is a file on the hard drive to support the "limited" write capacity of the computer's RAM in case of need.

Your computer will prioritize using RAM to store data because its access ability is faster than the hard drive. However, when the RAM memory is full or overloaded, Windows will automatically transfer the data from RAM to the Pagefile in the hard drive.

However, in some cases, the cause of the Disk Usage error may be because the Pagefile is used continuously.

To fix the error, the first solution you can apply is to add more RAM. However, in order not to lose money unjustly, you can apply another way is to move the pagefile to a drive that is not the system hard drive. To do this thing:

1. Right-click My Computer or This PC, select Properties.

2. Next, go to Advanced system settings => Settings (under Performance) => Advanced => Change.

3. By default pagefile will be selected, select No paging file and then click Set.

4. Next select the hard drive you want to move the pagefile to, then click “System managed size” => Set.

5. Click OK and restart your computer.

add more RAM

After all, if the above methods do not work for you, please upgrade the hard drive to SSD, make sure this 100% full disk error will disappear.


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