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What's the difference between UEFI and Legacy?
First, the types are different.

1, uefi:uefi is the new BIOS.

2.legacy:legacy is a traditional BIOS.

Second, the running time is different.

1, uefi: Running process uefi:UEFI means that the computer is turned on, and then UEFI is initialized, which directly goes to the startup to repair the system and finally enters the system.

2.legacy:Legacy runs a complicated process, starting the computer, then initializing through BIOS, then self-checking through BIOS, then booting the operating system, and finally entering the system.

Third, the requirements are different.

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

2. Traditional: Systems installed in traditional mode can only enter the system in traditional mode.