This is a video tutorial in the Computers & Programming category where you are going to learn how to defragment your hard drive for Windows Vista. Running a disk defrag is a great way to improve your computer performance. Go to start > control panel > systems and maintenance. Under the administrative tools click on "defragment your hard drive". In the next window, you can schedule an automatic defragmentation or initiate a defragmentation right away. To start defragmentation, click on "defragment now", select the volume and click OK to proceed. The time taken for the process will depend on your computer and the state of the hard disk.