BIOS (Basic Input/Output System) and UEFI (Unified Extensible Firmware Interface) are types of firmware stored on a computer’s motherboard that start the computer and prepare it to run the operating system.
When you turn on a computer, BIOS or UEFI:
Performs a hardware check (called POST – Power-On Self Test)
Initializes hardware like CPU, RAM, keyboard, and storage devices
Loads the operating system from the hard drive into memory
BIOS
The traditional and older firmware system
Works in a basic text mode
Has limited features and supports smaller disk sizes
UEFI
The modern replacement for BIOS
Faster and more powerful
Supports large hard drives and modern hardware
Provides a graphical interface and better security features (like Secure Boot)
Conclusion:
BIOS and UEFI are essential startup programs that initialize hardware and load the operating system, with UEFI being the advanced and modern version of BIOS.
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BIOS (Basic Input/Output System) and UEFI (Unified Extensible Firmware Interface) are types of firmware stored on a computer’s motherboard that start the computer and prepare it to run the operating system.
When you turn on a computer, BIOS or UEFI:
BIOS
UEFI
Conclusion:
BIOS and UEFI are essential startup programs that initialize hardware and load the operating system, with UEFI being the advanced and modern version of BIOS.