What Is A Hard Disk?

A Hard Disk (Hard Drive) is where everything is stored on your computer. All of your programs, files, OS('s) (Operating System(s)), and any other data that you save or install in all stored on this drive. In computer terms it is proper to spell disk in hard disk with a k rather than c (disc) because disc is used for cd's and the term disk is used for the magnetic disks which are used in hard drives. Hard disks, unlike RAM (Memory), is considered non-volatile which means it keeps information stored even after the computer is turned off. The amount of information a hard drive can hold is usually measured in Megabytes (MB's) or more often these days Gigabytes (GB's). They also have some servers that use hard disk's that hold massive amounts of information that amount to Terabytes (TB's).

The most popular hard drives fall into two main categories: Parallel ATA and Serial ATA. Parallel ATA is more less the standard but Serial ATA is becoming more and more popular. The main differences between the two are cables size, speed, and price. PATA hard disks use big flat bulky cables to connect to your power supply and motherboard within your tower enclosure. SATA drives use a serial cable to connect to the different components with your computer. Because SATA is still fairly new, they are generally more expensive than PATA drives because of there faster speeds and newer technology used.

This hard drive is basically a magnetic disk enclosed in a metal casing that spins. It kind of works like a cd in a cd player. When you request information to be retrieved from the disk, the read/write heads on the drives locates and find the wanted data and then transfers it to the system's memory where it is held until either the user terminates it or the computer is shut off. The hard disk is a very important component in the computer system. Without this component, there would be no working computer system.

My name is Sergio Woods and I've been studying computers for over 7 years now. I have a great deal of knowledge in aspects ranging from Internet Administration to software programming to hardware and component installation. In my studies I have come to realize that there are very general things even the most casual computer user should know how to do in order to keep their computer running at its peak performance.

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