Features of BIOS (Basic Input Output System)
Prior to booting, the Power-On Self-Test (POST) inspects hardware components.
The boot loader finds the operating system in storage and loads it.
The BIOS Setup Utility lets users adjust hardware parameters including CPU clock speed and boot order.
Hardware initialization makes ensuring that all necessary peripherals—such as the keyboard, mouse, storage, etc.—are found and operational.
Prior to the OS taking control, BIOS drivers offer fundamental low-level drivers for system components.
Features for system security include Secure Boot (in UEFI) and password protection.
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