This content has been automatically translated from Ukrainian.
UEFI (Unified Extensible Firmware Interface) is a specification of a software interface that replaces the traditional BIOS in modern computers. It serves to load operating systems and configure the computer's hardware.
UEFI offers more advanced capabilities compared to traditional BIOS. Some of its main advantages include:
- Enhanced boot capabilities: UEFI can boot operating systems from advanced file systems such as GPT (GUID Partition Table), which supports disks larger than 2 terabytes and more.
- Graphical interface: UEFI provides the ability to use a graphical interface during computer setup. This makes the setup process more user-friendly and accessible.
- Advanced networking capabilities: UEFI supports network protocols that allow operating systems and updates to be loaded over the network, directly from web servers.
- More advanced hardware settings: UEFI allows for more detailed configuration of system parameters such as CPU speed, voltage, memory, and others.
- Support for additional features and devices: UEFI provides extended support for new technologies such as Secure Boot, TPM (Trusted Platform Module), and embedded peripherals.
What are the main differences between UEFI and BIOS?
The main differences between UEFI (Unified Extensible Firmware Interface) and BIOS (Basic Input/Output System):
- Operating system loading: BIOS can only load operating systems from disks that use the standard MBR (Master Boot Record) partitioning scheme. In contrast, UEFI supports the more advanced GPT (GUID Partition Table) disk layout, allowing operating systems to be loaded from disks larger than 2 terabytes and more.
- User interface: BIOS typically has a text-based interface with a limited set of options and menus available for configuration. In contrast, UEFI supports a graphical interface with more user-friendly and intuitive configuration options.
- Security features: UEFI provides enhanced security features such as Secure Boot, which verifies the digital signatures of boot software to prevent the loading of malicious code. BIOS lacks such built-in security mechanisms.
- Hardware configuration: UEFI offers broader hardware configuration options, including detailed settings for the CPU, memory, I/O ports, and other components. BIOS has less advanced configuration options.
- Extensibility and advanced features: UEFI is a more flexible and extensible interface that supports additional features such as network boot protocols (PXE), advanced storage devices, embedded devices, and more. BIOS has limited functionality.
- Initialization process: BIOS initializes during the computer's power-on and performs the POST (Power-On Self Test) process, after which it hands control over to the operating system. UEFI executes a more complex initialization process that may include recognizing and configuring hardware before loading the operating system.
UEFI is a more modern and advanced standard compared to BIOS and provides more options for configuration, security, and system extensibility.
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