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This article mainly introduces what are the differences between legacy and uefi, the article is very detailed, has a certain reference value, interested friends must read it!

The difference between legacy and uefi: 1. Uefi is a new type of BIOS,legacy, which is a traditional BIOS;2 installed in Legacy mode, and can only enter the system in legacy mode. Uefi only supports 64 systems and the disk partition must be in gpt mode.

The difference between legacy and uefi:

Uefi is the new BIOS,legacy is the traditional BIOS. The system you install in UEFI mode can only be booted in UEFI mode; similarly, if you install the system in Legacy mode, you can only enter the system in legacy mode. Uefi only supports 64 as the system and the disk partition must be in gpt mode. Traditional BIOS uses Int 13 to interrupt reading the disk and can only read 64KB at a time, which is very inefficient, while UEFI can read 1MB each time and load faster. In addition, Win8, which further optimizes UEFI support, claims to be able to boot instantly.

The new UEFI, the full name of "Unified Extensible firmware Interface" (Unified Extensible Firmware Interface), is a standard that describes type interfaces in detail. This interface is used for the operating system to automatically load into an operating system from a pre-started operating environment.

The Extensible firmware Interface (Extensible Firmware Interface,EFI) is a recommended standard proposed by Intel for the architecture, interfaces, and services of PC firmware. Its main purpose is to provide a set of consistent and correctly specified startup services on all platforms before OS loads (before startup) and is seen as the successor to BIOS with a history of more than 20 years. UEFI is developed on the basis of EFI1.10. Its owner is no longer Intel, but an international organization called Unified EFI Form.

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