Hard Drive

The main storage device on a personal computer system is the internal hard drive. It holds both data and program files. Hard drives come in different sizes, measured in megabytes or gigabytes (billions of bytes). Sample sizes of hard drives include 40GB, 80GB, 100GB, 500 GB, 1TB. The hard drive is generally referred to as drive C:.

Floppy disk drives can hold 3.5” floppy disks. The floppy drive is generally referred to as drive A:. Since most new computers have omitted the floppy drive as a storage medium option, those computers do not contain an A: drive. High-capacity Zip drives holds 750 MB of data. The letter identifier for the ZIP drives, CD drives, DVD drives, and flash drive depend on how the computer is configured. It may vary from computer to computer.