A virus written into the boot sectors of a floppy disk. A popular way to spread a virus when floppy disks were widely used, the boot virus relied on people forgetting to remove the last floppy they ...

Typically, you shouldn't need to format your hard drive to get rid of viruses. As long as your anti-virus program is up-to-date, it should detect and remove any malware on your system. If, however, ...