Nov 04, · Windows 10 always % Disk usage in Performance & Maintenance I got the free upgrade to Windows 10 back when it was available through Windows Update on my Dell Optiplex and ever since, when I open the task manager, it always shows "Disk %" and that column is always red. Oct 12, · Method 2. Fix Windows 10 % Disk Usage Caused by Skype. Skype is another application that takes up a lot of disk space when in use, especially if it is automatically launched when you turn on Windows 10 computer. If you don’t want to completely uninstall Skype, please try the following trick to see if the % disk usage issue can be fixed.
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