NO4. How to format hard drive? H.VIEW-Leo • Created at：Mar 27, 2017 17:25:34 • Updated at：Apr 20, 2017 15:23:58 Formatting hard drive will delete all video files in hard drive.1. Right click mouse and go to main menu.2. Go to advanced.3. Go to storage.4. Select hard drive and click format. Prev Page NO28. How to play back videos?Next Page NO6. How to change system's password?