BIOS:
Basic Input Output System.
First software program when we starts our system.
Invention:
Gary kildall, in 1975.
Where is BIOS located:
Stored on a chip on part of computer motherboard.
Mother board:
Contains all components of computer.
Mother board:
Contains all components of computer.
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| Mother board |
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| BIOS chip on motherboard |
Also referred as:
Basic Integrated Operating System.
Basic Integrated Operating System.
Pronounced as bye-oss.
BIOS used for:
Perform basic functions such as booting and keyboard.
Identify and configure the hardware on a computer.
Function:
Set up process including driver loading and OS booting.
What BIOS exactly do?
Start coolers, check power levels, evaluate health of system hardware.
Load drivers and start boot process for operating system.
Any failure bios displays a message.
Need of BIOS:
To run our system we have to install BIOS.
To run our system we have to install BIOS.
How to access BIOS:
BIOS setup utility.
BIOS setup utility:
Controls communication between all input and output devices on computer (display, keyboard, mouse, printer).
Making changes to BIOS:
Change Boot order.
Computer is booting press delete key from there many options.
Tab and keys to navigate.
Page up and page down.
Press F10 to save changes and exit.
Check current BIOS version:
Booting:
Set of operations that loads and hence starts operating system.
When user switches on power button.
Modes of booting:
Safe mode:
Fonts and icons look big.
Safe mode with networking:
Taken to your desktop.
One extra set of drivers networking driver get loaded.
Allows to connect computer to network.
Safe mode with command prompt:
Direct access to open command prompt window.
Normal mode:
Windows starting normally.
How to access bios:
Set of operations that loads and hence starts operating system.
When user switches on power button.
Modes of booting:
Safe mode:
Fonts and icons look big.
Safe mode with networking:
Taken to your desktop.
One extra set of drivers networking driver get loaded.
Allows to connect computer to network.
Safe mode with command prompt:
Direct access to open command prompt window.
Normal mode:
Windows starting normally.
How to access bios:
UEFI firmware:
Replaces BIOS.
Firmware:
Software that embedded in a piece of hardware.
Difference between UEFI and BIOS:
BIOS uses 32 bit entries.
UEFI uses 64 bit entries.
Configuring BIOS:
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| Press F2 boot option for configuration when system is starting |
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| Main button indicates which type of version we are using and processor type |
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| Devices like onboard, sata in configuration |
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| If we gave security password no one access our system if not any of them can access our system with external harddrives and can loss our data |
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| While power offs how the system should be like off or blink options |
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| If we want to install os in our system we have to boot up the options can do with harddrive, optional drive |
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| After completing the process save changes and exit |
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| Click Y to exit or N to stay on current page |