It is likely you have heard the term “hard drive,” but do you know exactly what it is or what it does on your computer? The hard disk drive, often shortened to just “hard drive” or “HD,” is usually the largest data storage device component of your computer. The hard drive is a hardware – meaning it has it physical component you can actually see, touch, and remove from your computer.
Hard drives store almost everything on your computer, including your operating system, most software, and most of your files. Even when your computer is powered off, your hard drive holds on to all of the information you have stored on it.