What is UEFI?

Sep 06, 2017 by USBstart.com

UEFI is the abbreviation of Unified Extensible Firmware Interface. It's a specification that defines a software interface between an operating system and platform firmware. 


Nowadays, many new computers use UEFI instead of BIOS, with most UEFI firmware implementations providing legacy support for BIOS services. UEFI can support remote diagnostics and repair of computers, even with no operating system installed. 


UEFI was developed based on EFI 1.10. It's belong to an international institution called Unified EFI Form not Intel.


With the following advantages, UEFI replaces and improves on the traditional BIOS.

  Ability to boot from large disks (over 2 TB) with a GUID Partition Table (GPT)

  CPU-independent architecture

  CPU-independent drivers

  Flexible pre-OS environment, including network capability

  Modular design

  Backward and forward compatibility


Different computers with UEFI will have different interfaces, it's all up to the manufacturer. How to judge whether your computer is boot form UEFI? Now I will introduce there ways to help you identify.


1. Enter BIOS to see whether your computer support UIFI.

    This is the most reliable method. Shut down your computer and then press the fast key to enter BIOS (Different computer has different shortcut keys) After inter BIOS interface switch to Boot to see if there has UEFI option.


UIFI 1


2. Form command window.

    Press win + r then Input cmd to open the running window, then input bcdedit /enum {current} and press enter. If the path show up with winload.efi, that is to say it can boot from UEFI, vice versa. 


UIFI 2


3. Enquiry system information

    Press win + r and input msinfo32 then enter to see the system information. Check the BIOS mode.


UEFI 3