What is the difference between uefi and legacy?

1. Different types

1. uefi: uefi is a new BIOS.

2. Legacy: Legacy is a traditional BIOS.

2. The running process time is different

1. uefi: The running process of UEFI is to turn on the computer, then UEFI initialization, directly to the boot repair system, and finally enter the system.

2. Legacy: The running process of legacy is more complicated. The computer is turned on, then initialized by BIOS, then through BIOS self-test, then booting the operating system, and finally entering the system.

3. Different requirements

1. uefi: uefi only supports 64-bit system and the disk partition must be in gpt mode.

2. Legacy: A system installed in Legacy mode can only enter the system in Legacy mode.

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