What is a boot sector?

The boot sector is a part of the hard disk or floppy disk that has the code stored to start special programs and linking to other key features to make the disk work. There are many types, but there are two main: recording of the main boot and bundle record. On the unity that was divided, there is a recording of the main boot and usually finds an active partition and triggers its own volume record. Recording of the trigger volume, in turn, often contains the code for starting the operating system on the computer. BIOS computers, a part that runs before anything else, immediately looks at this unit sector, whether it is a master or volume, for instructions on what to do next. In fact, the implementation sector may include instructions to do quite complex things that are used for things such as giving the user the opportunity to run one of many operating systems, but also means that there is a potential for abuse in the form of viruses.

To beThe sector sector, the sector must meet only one criteria to have a 0XAA55 signature as its last two bytes. The inability to have this signature may result in an error and the computer may not complete the introduction. This can happen for several reasons, including a virus, or simply a corrupt sector from a physical error on the unit itself.

This type of virus is simply the one that replaces the normal code of the start -up sector sector code. Since the launching sector is loaded whenever the computer starts, such viruses can be incredibly destructive and in some cases it can be quite difficult to remove properly. Because the virus is loaded into memory as soon as the computer is launched, it can also be expanded to every disk or disk that the infected computer comes into contact.

The most common way, as the boot sector is spread, is to leave the infected disk in the disk drive of the computer. After starting the next BIOS reads a recordThe bundle of this disk, accepts the virus and passes it into memory. From there it can expand to other units and other embedded discs. The virus can also be handed over by a network if it is not properly protected and can even be transmitted as attachment to e -mail.

Removal of the introduction virus requires a good antivirus program. Many encrypt the boot sector when they infect it, so it is not a direct issue of the removal of the virus. For this reason, it is important to use a good antivirus program that has a register of many such viruses, so it can carefully remove the virus without damaging your computer.