“BOOT SECTOR VIRUSES can infect hard drives and removable disks, such as floppy disks. The boot sector is an area at the beginning of a hard drive or other disk where information about the drive or disk structure is stored. Symptoms of a boot sector virus may be a computer that is unbootable or gives error messages upon booting. Frustratingly, boot sector viruses may be present with no noticeable problems.”
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