43. What are BIOS and UEFI? Everything about POST, boot order, and hardware settings
The Basic Input/Output System (BIOS) is a specialized program built into the motherboard that serves as a bridge between the physical components and the operating system. In this episode of the TIC EduPro course, we'll explore the key functions of the BIOS, its evolution into the modern UEFI graphical interface, and the rules for safely changing critical PC settings.
LESSON KEY TOPICS:
● Hardware Self-Test (POST): How the firmware checks the functionality of components upon power-on, and the role of beeps or error codes in diagnosing problems.
● Hardware Initialization: Preparing the processor, RAM, USB interfaces, and stocare (SATA) controllers for correct operation.
● Configuring Boot Parameters (Boot): Establishing the precise sequence for polling drives (HDD, SSD, USB flash drives) to successfully launch the operating system.
● Configuration and Overclocking: Fine-tuning hardware settings, including CPU overclocking, fan control, and integrated graphics.
● Security and Firmware: Setting system startup passwords and the importance of careful firmware updates (flashing/flashing the BIOS) for stability.
● Transition to UEFI Standards: The advantages of the Unified Extensible Firmware Interface over traditional BIOS and its expanded functionality.
● Menu Entry Methods: Understanding hotkeys (F2, F12, Delete, Esc) for accessing settings depending on the motherboard brand.
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