LYCOS RETRIEVER 
Computer Viruses: Hard Drive
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Do all computer viruses wipe your hard drive? Not at all. It depends on the type of virus. Some are designed purely to cause mischief on your system or will simply spread via your e-mail address book to everyone you know. They're not always harmful. They are always a nuisance!
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There are many different types of computer viruses and worms that can infect your hard drive and PC. Each type of virus has its own separate factors and means of infiltrating your hard drive which makes them different from each other. If you're wondering, What kind of virus is your computer most susceptible to?" or "How you could avoid this type of virus?"
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The first line of defense against viruses, as with every potential computer disaster, is to make regular backups of the vital data stored on your hard drive. Ideally you should periodically do this to a medium that's not continuously connected and accessible to prevent a virus from infecting it, too.
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Anti-virus software scans your system and eliminates viruses from your computer. When a virus is detected, the software removes it and cleans your hard drive. There are many anti-virus programs available. Here are links to a few:
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