Boot sector viruses can either infect the Master Boot Sector (MBS) or the boot records as you're talking about. Boot sector viruses are actually the early precursor of modern day viruses. Even so, they are still annoying and should be dealt with appropriately.
A multipartite virus is a combination of a boot sector virus and a file virus. It can hide in either type of program.
bombs,email viruses, trojans, worms,boot sector virus.....
A virus that uses both boot-sector and executable functions is a multipartite virus. This type of virus attacks a variety of platforms, and continually re-infects each platform until it is removed.
Boot Sector Virus
Most viruses cannot harm hardware, the only type of virus that can harm hardware is a Memory virus, which permanently writes itself to the Ram, or Memory of a computer, the best method to remove the virus is to replace the ram in the computer, which usually cost about 20 dollars for 2-4 gig cards, depending on their speed and retailer.
Boot sector virus
A boot sector virus is a virus that's located in or directly modifies a special part of the hard disk in a computer called the boot sector. The boot sector, in basic terms, directs the computer to the things it needs to load the operating system and user interface so you can use it. Viruses that modify the boot sector can be loaded into memory at the same time or even before the operating system, and can prevent the computer from starting up correctly in some cases. Boot sector viruses were more common during the days of DOS, when such viruses had easier access to the boot sector and other sensitive parts of the system. Today, these viruses are not very common because it is more difficult for them to spread and infect.
avg is an antivirus that provides the basic protection for free. If this is for use in a home PC that does not include any type of business or that records financial records, this is a good way to go.
The Macro virus is the most common type of computer virus. The ILOVEYOU virus is one example of this type of virus which hides in a document or spreadsheet.
The infection mechanism of a computer-virus is not specific.As the chances of success in the attack reduces in an earlier used algorithm,new algorithms are developed for success.The few types are:-1)Boot sector infection:-In this type,the virus attacks the first sector of the hard disk(frequently used as boot sector) and makes changes to the coded information which enables the loading of virus during computer boot.2)Network infection:-Here the virus enters via the download stream(valid for all types of viruses to some extent) and installs itself to the network to perform undesired action.3)Infection via removable media:-These are infected via removable media
variola virus
A Virus IS a type of Pathogen.