Floppy diskettes hold about 1.44 Megabytes of information. If you need to back up large data files or applications, backing up to floppy diskettes is not a practical solution. For data backup of large files, use a tape drive or a removable drive. This drive makes it easy for you to backup your data or share data with other PC's. Every time you exchange information with others through floppies or the Internet, you run the risk of infecting your PC with a computer virus.
Viruses can cause computer applications to malfunction or destroy the entire hard drive.
To protect against these viruses, buy an anti-virus program. All applications and data in your computer is stored in your hard drive. Unlike memory chips, hard drives are moving mechanical devices that wear down as you use your computer. As you read and write data to your hard drive, parts of your data are written at different locations in the hard drive. You will need to defragment your hard drive to prevent your hard drive from slowing down.