Win10 how to defragment disk

First, enter the Win10 desktop system, click [secondary computer] on its page, as shown below:

Second, then find the hard drive letter, such as D drive, click, as shown below Show:

Third, click [Manage] in the menu bar above, and then click [Optimize], as shown below:

Fourth, you will enter the dialogue to optimize the drive. Box, this is where the win10 disk defragmentation tool is located. Select a disk, such as D disk, click [Optimize], as shown below:

Finally, the system will analyze the disk fragmentation of the D disk, and perform disk defragmentation D, as shown below :