What does uefi mean?

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Uefi refers to the unified extensible firmware interface, which is a personal computer system specification, which is used to define the software interface between operating system and system firmware as an alternative to BIOS. Uefi is responsible for power-on self-test, contacting the operating system, and providing an interface between the operating system and the hardware.

Introduction:

Uefi refers to the unified extensible firmware interface, which is a personal computer system specification, which is used to define the software interface between operating system and system firmware as an alternative to BIOS. Uefi is responsible for power-on self-test, contacting the operating system, and providing an interface between the operating system and the hardware.

Detailed introduction:

Unified Extensible firmware Interface (English: Unified Extensible Firmware Interface, abbreviated UEFI) is a personal computer system specification that defines the software interface between operating system and system firmware as an alternative to BIOS. The extensible firmware interface is responsible for power-on self-test (POST), contacting the operating system, and providing an interface between the operating system and the hardware.

The predecessor of UEFI is Intel Boot Initiative, which was developed by Intel in 1998 and was later renamed as Extensible firmware Interface (Extensible Firmware Interface, abbreviated EFI). Intel handed it over to the Unified Extensible firmware Interface Forum (Unified EFI Forum) in 2005 to promote and develop it. In order to highlight this point, EFI also changed its name to UEFI (Unified EFI). The founders of the UEFI Forum are 11 well-known computer companies, including hardware manufacturers such as Intel and IBM, software manufacturers Microsoft, and BIOS manufacturers AMI, Insyde and Phoenix.

It is generally believed that UEFI consists of the following parts:

Pre-EFI initialization module

EFI driver execution environment

EFI driver

Compatibility support module (CSM)

EFI high-level application

GUID disk Partition Table

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