The BIOS then displays some details about your system .This typically inclydes information about:
The processor
The floppy driver and hard driver
Memory
BIOS revision and date
Display
BIOS often with some detailed information system will be displayed. The main information includes:
processor
Floppy disk drives and hard disk drives
RAM
BIOS version and date
monitor
The BIOS will try to intiate the boot sequence from the first device
BlOS will begin the startup process from the first boot device
You are probably very familiar with two different types of software : the operating system and the applications
You may be familiar with the two types of software: the operating system and application software
Inside the above-mentioned ROM three different programs are stored (actually burned).The Basic Input and Output System (BIOS) that is responsible for teaching the main processor how to deal with basic devices, such as floppy unit or hard disk and so on; the Power on Self Test (POST)which is the program in charge of the self test thatis executed every time PC is powered up (likememory counting, for instance); and the Setup which is the program that allows the alteration ofthe parameters stored in the configuration memory(CMOS).
Three different types are stored in the above program in a read only memory (actually burn up). Basic input output system (BIOS program) directs the main processor as how to control a floppy disk drive, a hard disk device substantially. Power On Self Test program (POST) is responsible for implementing the program self-testing (such as memory capacity detection) each time the computer is turned on. Setup (the Setup) is designed to modify the kind of the parameters stored in the CMOS process.
The BIOS software has a number of different roles, but its most important role is to load the operating system
BIOS software to perform many different tasks, but the most important task is to load the operating system.
When you tum on your compute, the BIOS performs the following tasks. This is its usual sequence:
1. Check the CMOS Setup for custom settings
2. Load the interupt handlers and device drivers
3. Initialize registers and power management
4. Perform the Power on Self Test (POST)
5. Display system settings
6. Determine which devies are bootable
7. Initiate the bootstap sequence
When you start the computer, BIOS executes several tasks as follows, and is usually performed in the following order
1. General Settings CMOS detector
2. Load the interrupt handlers and device drivers
3. Initialization and power management registers
4. Execute Power On Self Test program (POST)
The display system is provided
6. Determine and boot device
7 Start bootstrap program