naveedanjumjavaid
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Subject : Boot Sector Viruses
Boot Sector Viruses
Boot sector viruses reside in the part of the disk that is read into memory and executed when your
computer first boots up. (On a floppy disk, that’s the boot sector; on a hard disk, the equivalent area
is called the Master Boot Record.) Once loaded, the virus can then infect any other disk used by the
computer; a disk-based boot sector virus can also infect a PC’s hard disk.
Most boot sector viruses were spread by floppy disk, especially in the days before hard disks
were common. Since removable disks are less widely used today, boot sector viruses have become
much less prevalent than they were in the early 1990s.
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