SysMain is now stopped for your current Windows session, and will never (re)start at the next boot of your PC.
Set Startup type to Disabled, click Stop and click OK. Click Start, type Services, and click Services (app). So if you have issues with the disk performance because of SysMain / Superfetch, th you have 2 flavors: disable SysMain completely, or tune SysMain to reduce impact. The SysMain service does not critical processes within Windows 10. It will always continue to do disk operations, and indeed sometimes at very annoying moments. To begin with: You can’t keep SysMain / SuperFetch enabled without losing performance. So decide wisely whether you want the service on or off. At the same time, it is even more important to keep everything in the right order. For an HDD it is extra intensive and time consuming to continuously set up your disk in the best possible way. Cause of high disk usage by SysMainĪ traditional hard disk, HDD, is a lot slower than the currently used Solid State Drive, SSD. 
Whenever you start an often used application, like Outlook or Adobe Photoshop, all bytes are nicely ordered in chunks, so it costs less I/O to retrieve the information. Based on this information, SysMain efficiently arranges your hard disk at block level. It continuously scans your computer behavior at the hard disk level and in this way determines which files and applications you use most. It is a service that runs in the background. Under this name, it already got a bad reputation in Windows 7.
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