Question

what is a boot virus and how there harm to computer and also what are the Antivirus

Answer 1

a boot sector virus is a type of virus that infects the boot sector of floppy disks or Master Disk Record (MRB) of hard disks (some infect the boot sector of the hard disk instead of the MRB) and antivirus is (of software)designed to detect and destroy computer virus

Answer 2

Hi,

What is a boot virus?

A boot sector virus is a type of virus that infects the boot sector of floppy disks or the Master Boot Record (MBR) of hard disks (some infect the boot sector of the hard disk instead of the MBR). The infected code runs when the system is booted from an infected disk, but once loaded it will infect other floppy disks when accessed in the infected computer.

how they harm to computer?

A boot sector virus infects computers by modifying the contents of the boot sector program. It replaces the legitimate contents with its own infected version. A boot sector virus can only infect a machine if it is used to boot-up your computer, e.g. if you start your computer by using a floppy disk with an infected boot sector, your computer is likely to be infected. A boot sector cannot infect a computer if it is introduced after the machine is running the operating system.

what are the Antivirus?

A software designed to detect and destroy computer viruses.