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” Type “defragment” in the search box.  ” ” This will determine if the drive needs to be optimized. The Current Status window will show if the drive needs optimizing. If it shows that the drive is more than 10% fragmented, optimize it by selecting the “Optimize” button.

Summary:
Swipe your finger inward from the right edge of the screen, or hover the mouse on the upper-right of the screen. Tap or click on “Search. Select "Defragment," and optimize your drives. Tap or click the drive you want to optimize under “Status. Tap or click on “Analyze. Optimize.