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Disk Operating System (DOS) Booting Process
The process of starting the computer is known as booting. There are two types of booting – Cold Boot and Warm Boot. , Cold boot is when you turn on a computer that has been completely shut down and warm boot is used to restart or restart a computer.
Mainly three files are used to start the Disk Operating System (DOS) – command.com, io.sys and msdos.sys.
These files are necessary for booting any computer through DOS. When booting the PC, MS-DOS looks for a file in the root directory named – AUTOEXEC.BAT
This is a batch file, which contains some commands that you want to be executed as soon as you start the PC. For example, you want to set the date and time after booting or tell it in which directory to look for a file if it is not found etc. A simple AUTOEXEC.BAT file contains the following commands –
DATE
TIME
PROMPT $P$G
PATH = C:\DOS;C:\WS;C:\WINDOWS