🧠 Viewing the BIOS and Changing the Boot Order

🧠 Viewing the BIOS and Changing the Boot Order

📘 Introduction

BIOS (Basic Input/Output System) is firmware stored on the motherboard that initializes hardware during the booting process. One of its important functions is to allow users to configure system settings, including the boot order.

🔍 What is BIOS?

• BIOS stands for Basic Input/Output System.
• It is the first software that runs when a computer is powered on.
• It performs hardware initialization and provides runtime services for the operating system.

📎 BIOS vs UEFI

• BIOS: Traditional firmware interface, limited to older systems.
• UEFI: Modern replacement for BIOS with enhanced features and graphical interface.

🧪 How to Enter BIOS Setup

To view or change BIOS settings, follow these steps:

1. Shut down or restart the computer.
2. During startup, press the required key (usually Del, F2, Esc, or F10) as soon as the screen lights up.
3. This will open the BIOS/UEFI setup screen.

Note: The specific key depends on the computer manufacturer. Refer to the on-screen prompt or user manual.

📂 Navigating BIOS Interface

• Use arrow keys to move through options.
• Enter to select a menu or setting.
• Esc to go back or exit a menu.
• F10 to save and exit (check the legend at the bottom of BIOS screen).

⚙️ Changing the Boot Order

The boot order decides which device the computer tries to load the operating system from.

Steps to Change Boot Order:

1. Enter the BIOS setup utility.
2. Navigate to the Boot or Boot Order tab.
3. Use the arrow keys to select a boot device (e.g., USB, CD/DVD, HDD).
4. Use keys like +/- or F5/F6 to change the order.
5. Set your preferred device (like USB) as the first boot device.
6. Press F10 to save changes and restart.

🔄 Example:

If you want to install a new OS from a pen drive, set USB Drive as the first boot device.

🔐 Precautions While Using BIOS

• Do not change unknown settings without guidance.
• Changing wrong settings can affect system startup.
• Always note down default values before changing.

🧪 Practical Activity

• Restart your system and enter BIOS setup.
• Identify BIOS version and manufacturer.
• View and note down the current boot order.
• Change the boot order to prioritize USB or DVD drive.
• Save changes and reboot the system.

📌 Summary

• BIOS allows hardware configuration at a basic level before OS loads.
• You can enter BIOS using specific keys during startup (like Del, F2, etc.).
• Changing boot order is important for installing operating systems or troubleshooting.
• Always handle BIOS settings with care to avoid system issues.