Win 8.1: Disk usage 100% in task manager

windows 8.1, window 8.1, win 8.1 After using Windows 8.1 for some time, i notice my Win 8.1 machine having slow performance and my hard disk seems very busy. When i check with my Task Manager, it show Disk usage 99% and 100%. At that time, I only have one notepad program running and nothing else, just wonder why my disk is so busy. After few days of testing, i finally find out the problem. Actually Win 8.1 come with a superfetch service that help to anticipate and prefetch the next item / program that you going to launch to memory, so that your machine will gain performance improvement. But i didnt see any improvement at this point, so i decided to disable these service.


To solve the disk usage 100% in Win 8.1, follow the steps below:-


  • Right click on the Desktop Start button and select “Run” and type “services.msc” and press enter
  • The Service window will popup, now look for “Superfetch” and double click on it
  • A properties window will be displayed. Click on “Stop” button to stop the service
  • Under “Startup type” select “Disabled” and click on “Apply” then “Ok” button
  • Now restart your machine and from now on your disk will be peaceful as normal

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