We know
that a computer is simply a machine which works under the control of a
set of instructions called program. For a computer to be ready to work,
all its peripherals should be checked and activated, and the
relationship between hardware and software needs to be established. For
this purpose, a special type of software is used, which is called as an
Operating System.
Starting process of computer varies from one operating system to
another. There are different processor to enter into the programs. It
depends upon the operating system installed into the computer. So, you
have to know about operating system of computer before running the
programs.
There are mainly two types of Operating system used in the computer:
1. Ms. Dos (Microsoft Disk Operating System)
2. Ms. Windows (Microsoft Windows 3.11, ’95, ’98, ‘Me, ’00, ‘XP..)
However, the inner process of starting your computer is same, which is called Booting.
Booting:
The process of loading the system files of the operating system from
the disk into the computer memory to complete the circuitry requirement
of the computer system is called booting. The system files of MS. DOS
are:
· IO.SYS: It checks all the input and output devices and their activities and make them ready
· MS. DOS.SYS: It builds the relation between the hardware and the application software-acting as interface.
· COMMAND.COM: It helps to make the instructions given to the computer using the different programs executable.
IOS.SYS AND MSDOS.SYS are hidden files but COMMAND.COM is visible.
Types of Booting:
There are two types of booting:
· Cold
Booting: If the computer is in off state and we boot the computer by
pressing the power switch ‘ON’ from the CPU box then it is called as
cold booting.
· Warm
Booting: It the computer is already ‘ON’ and we restart it by pressing
the ‘RESET’ button from the CPU box or CTRL, ALT and DEL key simultaneously from the keyboard then it is called warm booting.
