How to Disable Superfetch / SysMain in Windows 10

To disable Superfetch (Sysmain) on Windows 10:

1. Select the Start menu, type services, and select the Services app. You could also press Windows + R, type services. ...
2. In the Services app, scroll down to SysMain, right-click on the service and select Stop.

1. What happens if I disable SysMain?
2. Is it fine to disable SysMain?
3. How do I disable SysMain service host?
4. Should I disable Superfetch Windows 10?
5. Is it okay to disable SysMain?
6. How do I fix high SysMain disk usage?
7. Why is my HDD at 100%?
8. Is it safe to disable prefetch?
9. Does disabling SuperFetch increase FPS?
10. How do I reduce 100 disk usage?
11. Why is disk usage so high?
12. Is high disk usage bad?

What happens if I disable SysMain?

Disabling the service will disable more than just superfetch. Prefetch also depends on this service, so if you disable it you will also prevent the prefetch folder and layout. ini file from being populated/updated, which in turn means your defrag tool won't be able to optimize the file layout properly.

Is it fine to disable SysMain?

If you load a program, Windows has to copy the executable into memory in order to run it. If you close the application, the program still exists in RAM. Now, if a program needs some RAM, Windows will give it some memory. ...

How do I disable SysMain service host?

How to Disable SysMain Service?

1. Type services in the search box on task bar.
2. Click on the services.
3. Double click on the SuperFetch or SysMain service. Or right click and select properties.
4. Set the startup type 'Disabled'. And also click on the Stop button to stop the service immediately.

Should I disable Superfetch Windows 10?

Most users should keep Superfetch enabled because it does help with overall performance. If you aren't sure, try turning it off. If you don't notice any improvements, turn it back on.

Is it okay to disable SysMain?

The most common problem people report is the 100% disk utilization issue. If this is you, then disabling Superfetch or Sysmain may resolve the problem. Since Superfetch is only a system optimization feature, you won't hurt Windows by stopping the service.

How do I fix high SysMain disk usage?

Try these steps:

1. Open administrative Command Prompt.
2. Type following command and press Enter key: sc stop "SysMain" & sc config "SysMain" start=disabled.
3. You should get [SC] ChangeServiceConfig SUCCESS after command execution. Close Command Prompt and check if issue is resolved.

Why is my HDD at 100%?

If you see a disk usage of 100% your machine's disk usage is maxed out and your system's performance will be degraded. You need to take some corrective action. Many users who have recently upgraded to Windows 10 have complained of their computers running slowly and Task Manager reporting 100% disk usage.

Is it safe to disable prefetch?

Prefetch loads pieces of program files into RAM. By disabling this feature, you free up your system memory. This is one of those tweaks that isn't universal to all SSDs. In fact, it's not recommended if you own an Intel drive, as it purportedly has a negative impact on performance.

Does disabling SuperFetch increase FPS?

Once PCs started to equip with SSDs on Windows 7 and onward editions, Windows automatically disable Superfetch to enhance PC performance. If you are still having HDD or have and old PC then you should probably disable superfetch to increase FPS in gameplay and PC overall performance.

How do I reduce 100 disk usage?

How to Fix: 100% Disk Usage in Windows 10

1. Symptoms of 100% Disk Usage in Windows 10.
2. Method 1: Fix Your StorAHCI.sys Driver.
3. Method 3: Change Settings in Google Chrome.
4. Method 4: Disable Windows Search.
5. Method 5: Disable SuperFetch Service.
6. Method 6: Disable Antivirus Software.
7. Method 7: Uninstall Any Flash Player Update.
8. Method 8: Reset Virtual Memory.

Why is disk usage so high?

High disk usage can also be caused by your antivirus software — during a background scan, or if the tool suffers a malfunction and gets stuck. Go into your antivirus tool's dashboard to see if a scan is in process. If so, do not stop it.

Is high disk usage bad?

Even if your drive seems pretty comfortable acting as a chronic overachiever, keep in mind that 100% disk usage is not something for you to take pride in. Your disk working at or near 100 percent causes your computer to slow down and become laggy and unresponsive. As a result, your PC cannot perform its tasks properly.