Lately, numerous individuals have reported encountering the Service Host SysMain high disk issue on Windows 10. Even though it might assist with understanding your hard disk, it isn't essential. If you're dealing with this problem, this article from MiniTool offers several solutions.

If your computer begins to experience performance issues and operates more slowly than usual, a process might be using excessive disk resources.

Service Host SysMain

A number of users have mentioned that Service Host SysMain leads to high disk usage in Windows 10. The SysMain service is connected to Superfetch. If you're using an HDD for your system, you could face the Service Host SysMain high disk usage problem.

The Service Host SysMain (previously called Superfetch) is a collection of system processes. It can be found in the System 32 folder. The SysMain process gathers various usage data from the system. This information is then organized into blocks on your hard drive and prioritized.

Now, let's explore how to resolve the Service Host SysMain issue. The most effective way to address the Service Host SysMain 100 disk issue is to disable it on Windows 10. Prior to attempting to disable it, you can try the following approaches.

1. Run SFC
2. Upgrade HDD to SSD
3. Update your Windows system
4. Use the disk cleanup tool

If these methods don't work, you can attempt to disable Service Host SysMain.

How to Disable Service Host SysMain

Three methods are available – through Service, Command Prompt, or Registry Editor.

Disable Service Host SysMain in Service

You can try disabling Service Host SysMain in Services. Here's how:

Step 1: Type services in the Search box to open it. Then, click the Standard category.

Step 2: Find Service Host SysMain and right-click it to select Properties.

Step 3: Under the General tab, change the Startup Type to Disabled and click the Apply button. You've successfully disabled Service Host SysMain.

Disable Service Host SysMain in Command Prompt

You can also disable Service Host: SysMain in Command Prompt.

Step 1: Type cmd in the Search bar, then right-click the first result to choose Run as administrator.

Step 2: Type the following command and press the Enter key:

sc stop “SysMain” & sc config “SysMain” start=disabled

Step 3: You'll receive a message stating Change Service Config Success.

The SysMain service is now disabled, and the Service Host SysMain high disk issue should be resolved.

Disable Service Host SysMain in Registry Editor

Alternatively, you can disable Service Host SysMain in Registry Editor. Follow these steps:

Step 1: Press the Windows + R keys simultaneously to open the Run dialogue box. Then, type regedit to open the Registry Editor.

Step 2: Navigate to the following path:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysMain

Step 3: Right-click Start in the right pane and select Modify.

Step 4: Enter 4 in the Value data box and click OK.

Close the Registry Editor and restart your computer. You’ve successfully disabled Service Host SysMain.

Final Thoughts

In summary, this post has provided three reliable methods to disable Service Host SysMain and solve the issue. If you encounter the same error, try these solutions. If you have any better ideas to fix it, feel free to share them in the comments section.

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