The Boot Process

BOOT PROCESS

Boot process is the important to start the system .It is the first process to execute .process of automatic loading of operating system to primary storage, and readying a computer system for use .in simple words we can say the process that make a system able to start and use its resources called boot process .

The boot process includes following steps:-

1: POST:-

Power on self test is the first program executes .its work is to check all resources that if they work properly or not if there is any problem occurs it findout the cause of the problem and resolve that.

2: Execute BIOS Instructions:-

In brief BIOS called (basic input output system ),is a important part of the operating system its work is to check the operations and works of all INPUT/OUTPUT ,and STORAGE DEVICES .It controls there operations also.

3: Boot Strap Loader:-

Is a small program which load in Ram (primary memory).

4:MBR(MASTER BOOT RECORD):-Is created on hard disks first track and when it is full the system unable to boot.

The process of boot:-

The last process in the pc startup is read the operating system. The startup program is a instructor to find the master boot record .this is located in a very first sector on either hard drive (c drive)or floppy drive(A drive) .From MBR(MASTER BOOT RECORD)it reads the BOOT STRAP(IS A PROGRAM)which points to the location of the startup files of the O.S. by default the pc will look for a boot sector in a floppy drive A. In drive A the startup program will search for the boot sector on hard disk C, when the boot sector is found a small program (Boot program is read from there) the boot strap takes over control of the pc .The startup program have done its job new Dos, windows another o.s. takes over control.