In the Disk Cleanup dialog box, on the Disk Cleanup tab, select
the check boxes for the file types that you want to delete, and
then tap or click OK.
Disk cleanup (Cont.)
6. In the message that appears, tap or click Delete files.
7. Go back to Computer in File Explorer, tap or click the drive you
cleaned up, and then tap or click Refresh. If you need to free
more space (the drive is still marked red), go to the next tip.