BIOS UEFI

Question

Answer

What does BIOS stand for?

Basic Input Output System

What is the BIOS?

The first software that runs when you start your computer

What other names is BIOS known by?

Firmware

Where was BIOS historically stored?

Read-Only Memory (ROM)

Where do modern systems store the BIOS?

Flash memory on the motherboard

What does storing BIOS in flash memory allow?

Updates

What does the BIOS do during startup?

Initializes hardware and prepares the system to load the operating system

What does POST stand for?

Power On Self Test

What is POST?

The diagnostic process performed by the BIOS during startup

What hardware does POST check?

"CPU

What happens if critical hardware fails POST?

An error message or beep code is displayed

How long does POST typically take?

A few seconds

What happens after POST completes?

The system loads the OS automatically or shows a bootloader prompt if multiple OSes are installed

What does the bootloader signify?

That POST has finished and the system is ready to load the OS

Why do some motherboards include dual BIOS chips?

To prevent failure during updates

What happens if a BIOS update fails with dual BIOS?

The backup BIOS can restore functionality

What systems use legacy BIOS?

Older systems

What is a limitation of legacy BIOS regarding input?

Text-based interface requiring keyboard navigation

What is a limitation of legacy BIOS regarding hardware?

Lack of support for modern hardware components

What does UEFI stand for?

Unified Extensible Firmware Interface

What is UEFI?

The modern standard for BIOS

Who developed UEFI?

Intel

What interface does UEFI offer?

A graphical user interface (GUI) with mouse support

What kind of configuration options does UEFI offer?

Advanced options for performance

What are common UEFI settings categories?

"CPU/BIOS overview

What can BIOS updates improve?

Hardware compatibility

What should you do before updating BIOS?

Backup current BIOS settings

What should you follow during a BIOS update?

Manufacturer instructions precisely

What should be ensured during a BIOS update?

A stable power source

What can happen from an incorrect BIOS update?

It can render a system inoperable