The hard drive is not readily visible from the outside of your system unit. As PCs get newer the storage capacity of their hard drive increases. Why? Newer software needs more hard drive space.

This drive is permanently mounted inside your system unit. Whereas you can take your floppy disks or CD-ROM disks with you to another location, the hard drive stays put. The hard drive uses the same technology to store data as the floppy drive.

The hard drive is a very important part of your PC. It contains all your software, operating system, and data. If this drive dies, your PC essentially dies too.