Windows 10 PCs with a traditional hard disk experience high disk usage through the SysMain process. Despite applying 5 effective ways to improve Windows 10 performanceperformance may still be miserable. Below is a screenshot of what Task Manager may look like when SysMain is busy:. Sysmain is better known as SuperFetch. Under this name, it already got a bad reputation in Windows 7. It is a service that runs in the background.

It continuously scans your computer behavior at the hard disk level and in this way determines which files and applications you use most. Based on this information, SysMain efficiently arranges your hard disk at block level. For an HDD it is extra intensive and time consuming to continuously set up your disk in the best possible way. At the same time, it is even more important to keep everything in the right order.

So decide wisely whether you want the service on or off. It will always continue to do disk operations, and indeed sometimes at very annoying moments. The SysMain service does not critical processes within Windows It is safe to stop it at anytime. SysMain is now stopped for your current Windows session, and will never re start at the next boot of your PC.

However, it will continue to run for this Windows session. Only some guides for performance on VDI and best practices on how to configure Superfetch. If this article did not help you solve your problem, please leave a comment! This website is visited thousands of times a day. There is a good chance that I or someone else has an answer to your question.

Not anymore. Back in the days when we had spinning hard disks, it really helped boosting performance. But nowadays with solid state drives, it barely improves your system. My sugesstion is to disabel it and runn it whenn needed once a Month. Like you did it when ther was no SSD and you did it whit the defrag tool.If your computer suddenly shows performance issues and starts working slow it is most likely a process is causing high disk usage. Service Host SysMain earlier known as Superfetch is a bundle of system process that includes multiple processes.

In this article, we explore a few troubleshooting steps to help you resolve the service Host SysMain causing a high disk usage issue in Windows Open the Task Manager and check the disk usage and see if it is normal. Stopping the SysMain services from Services can help you resolve the high disk usage caused by the process. Check if the high disk usage issue is resolved.

If your Windows computer has a traditional mechanical hard drive, consider upgrading to an SSD. Having your Windows installation and other frequently accessed programs in an SSD makes a lot of difference. Most of the modern laptops come with an M. If not, you can buy a separate caddy to install the SSD on your old laptop. The high disk usage issue usually occurs when the essential system processes run in the background. However, having an SSD will significantly reduce the chances of getting a high disk usage issue.

Installing the Windows updates can fix the high disk usage issue caused by a glitch in the operating system. The SysMain is causing high disk usage in Windows 10 issue can make your computer slow affecting the performance of other programs.

We have listed the three ways to disable the SysMain service in Windows 10 to help you resolve the problem. Please log in again. The login page will open in a new tab. After logging in you can close it and return to this page. The SysMain process can cause high disk usage in Windows 10, which can stop you from using your PC normally. In this article, we explore a few troubleshooting steps to fix the problem, so make sure to explore it entirely.

If you want to explore other useful guides, check out our dedicated Troubleshooting section. Don't hesitate to visit our thorough Windows 10 Hub for more nifty tips and tricks relating to this subject. To fix various PC problems, we recommend Restoro PC Repair Tool: This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance.

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service host sysmain using 100 disc

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You can help protect yourself from scammers by verifying that the contact is a Microsoft Agent or Microsoft Employee and that the phone number is an official Microsoft global customer service number. Close Command Prompt and check if issue is resolved.

If you still not able to disable SysMain older name Superfetch servicetry this registry manipulation after creating a System Restore point :.

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Windows 10 - How to Fix 100% Disk Usage - Fix High Disk Usage - 2020.

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Indibar Dutta. Hi, I am a windows 10 user. From past many months I am facing a issue where whenever I start working my laptop suddenly I face lag and hang issues. My system just gets hanged for few mins and I can't do anything.

Even the RAM usage also. And I get to see that SysMain service keeps running in the background and I don't have any control over it. It literally consumes everything and I can't work properly. For this problem to get fixed I have to always restart my laptop. Then only it gets fixed. So do you have any solution for it as to how to reduce the usage or completely stop that service?

Please help because I can't work properly and the performance just reduces.

How to Fix High Disk Usage “Service Host Sysmain”

Even it consumes most of my internet. This thread is locked.

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You can follow the question or vote as helpful, but you cannot reply to this thread. I have the same question Hello, Try these steps: 1. Open administrative Command Prompt. If you still not able to disable SysMain older name Superfetch servicetry this registry manipulation after creating a System Restore point : 1.

Open Registry Editor. In the right pane, double click on Start and set it to 4. Close Registry Editor and reboot your machine. Thanks for your feedback. How satisfied are you with this reply? Thanks for your feedback, it helps us improve the site. This site in other languages x.This is the best alternative to conventional virtual memory in earlier versions of Windows 8, 7, XP. It runs in the background, constantly analyzing RAM usage and checking which applications you run most often.

The thing is, when you want to run an application, it will launch much faster because it is already loaded into memory.

Preloading into memory (SysMain Host Services) and 100% disk usage

Unlike the paging file which can be enabled, resized, disabled, etc. This option is enabled by default in Windows SysMain is the best option for paging file, but not without flaws, because the system always uses the processor to access the compressed memory, which can slow down the computer.

As soon as the system needs more RAM for example, to load an application that has not been preloadedit frees up the necessary memory if necessary. Before Windows 8. With this virtual memory you can run and use this program, but it will run slower. Beginning with Windows 10, when the operating system needs more memory than is available, the process of compressing data, such as ZIP, into RAM, instead of sending it to the hard disk to a paging file.

Windows tries to avoid the use of preload into memory when RAM is available, but if some data requires a lot of memory and RAM is not busy, the system will compress the data by putting it in RAM to save resources and try force the best computer work. Most of the data is stored in RAM, so that the system can gain direct and trouble-free access to it.

In virtual memory or when calling the paging file, data is stored on the hard disk, which reduces the time it takes to convert data from the hard disk to RAM. So … should you disable SysMain in Windows 10? Now you will go to the screen showing all services on your system running, stopped or disabled and usually changing any settings in services is not a good idea unless you really know what you are doing.

In this case, you are trying to turn off SysMain, which is safe and will actually help you speed up your computer or laptop if it causes problems.

From now on, the SysMain service will be disabled and will not restart. Need someone who can write short articles on fix to application issues and programming errors of any languages. People from India only. You can write post as per your comfort in your free time there is no target.

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Payment will be done on regular basis.It seems to happen every time you need to do an important task, and your computer slows down, and you wonder what the reason behind it is. Malware may be the first offenders that come to your mind, but to be honest, most of the time, the culprit is software.

service host sysmain using 100 disc

Next, what you do? You check the task manager to find out which processes are slowing down the system. Some typical initial signs include system slows down, freezes in regular intervals, mouse movements, and the Windows begin to lag significantly. So, does this happen because of the Sysmain? Our Answer : Maybe or maybe not. Sysmain previously known as Superfetch Microsoft renamed it to Sysmain decreases boot time and make programs load faster by identifying your behavior on the computer and then adapting the computer to run certain apps faster.

This article focuses on steps that you need to disable the Service Host Sysmain service from your Windows 10 computer or laptop. Windows service is just like many other programs that run in the background and helps your system perform a particular task. They, however, do not have any UI user interfacewhen you start the computer, the windows services simultaneously begin with it. Step 3 — Search for Sysmain and right-click on it. Next click on properties. Step 4 — Click on Stopand next in the startup type option, choose to disable.

Step 6 — Restart the computer and check the disk usage.

Service Host SysMain high disk usage in Windows 10

Wait a minute! What if you were not able to disable the Service host Sysmain from the windows service? Find out below. Right-click on it and click on Modify. Once you complete the process, you need to restart the computer and open the task manager to check whether the service has been stopped or not. Command prompt executes entered commands and automates it via scripts.

You can easily disable the Sysmain from the command prompt, follow the steps below: —. These are the three best ways by which you can disable the Sysmain service easily from your windows 10 operating system and boost the performance of it. If, however, you were still not able to fix the problem, then you can contact us by leaving a comment below.

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But, many users have reported a boost in performance and low disk usage after they successfully disable the Sysmain form their computer or laptop. If you were able to fix the problem, then please share this post on your social media accounts. Your single share could help many people who are actively searching for how to disable the Service Host Sysmain from their system and make it faster. Matt is a Born Leader and loves to offer free technical solutions to everyone who needs it.

Having a degree in Bachelors of Computer Science, Matt is a passionate professional writer and loves to resolve day-to-day technology problems.

Save my name, email, and website in this browser for the next time I comment.Windows 10 generally runs quite fast on a brand new system. Over time it tends to slow down due to various software installs and general maintenance issues. In the past, the Windows service Superfetch was one of the primary reasons for high disk or high CPU usage. There are tons of user complaints online and suggestions for fixing this issue in Windows All of them worked well until Microsoft decided to pull a fast one on us in the Windows 10 October Update.

For some reason, Microsoft renamed the service as SysMain. The service host SysMain does the same thing as the erstwhile Superfetch service. It runs in the background and optimizes system performance. It does this by learning app usage patterns and preloads apps and programs on your computer.

Unfortunately, it eats up a lot of CPU power and causes high disk usage. This slowness is more prominent on systems with SSDs Solid State Drives since they are extremely fast, and any benefit of optimizing load time is in vain.

On computers with slow hard drives, preload can help improve the overall responsiveness of the system. On such devices, you are better off letting the service run in the background. Microsoft does not recommend disabling this service. But if you are the kind of person who likes to be in control, you can consider disabling this service to improve runtime performance.

It may be worthwhile to experiment and see how the system performs with the SysMain service on and off.

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You can compare the performance and decide which one works best for your system. Also note, there might be other things that may be causing high disk usage or high CPU such as Windows Update service, disk optimizer, etc. Besides, anti-virus software can also slow down your system. Do consider these factors before disabling SysMain.

Sometimes this will occur in conjunction with high RAM usage as well.

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There are multiple options to disable service host SysMain sys main on Windows Choose the one that matches your skill level. This option is only for advanced users.

Editing the Windows Registry can cause a system failure. Be extremely careful when using the Registry Editor. Again, Microsoft does not recommend disabling this service.

If your system is exhibiting high disk usage and high CPU usage, it is worthwhile to explore it.The signs can be seen from slow performance, lag, and fans spinning fast with a clear sound. When you open the Task Manager you will see which process is the culprit.

The first method which is quite effective is to turn off the Sysmain service. We can do this through the Service Manager program.

100% High Disk Usage Due To "SysMain Service" Running In Background

Next, you will see a list of all the services running on Windows. After restarting the computer, you can open the task manager and monitor the disk usage that is no longer high. After the Command Prompt program opens, copy and paste the following command, ending by pressing the enter key:. Update not only serves to update features but also closes bugs and fixes system errors that existed in previous versions.

The last solution is to replace the mechanical hard disk with an SSD. Not only does it make loading files faster, but opening programs and the startup process will be faster.

service host sysmain using 100 disc

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