Extensible Firmware Interface (EFI) is a specification that defines a software interface between an operating system and platform firmware. EFI provides a way for the operating system to interact with the hardware, regardless of the specific hardware platform. The EFI version is important because it determines which features are supported by the firmware and the operating system.
There are several ways to check the EFI version. One way is to use the system information utility. To do this, open a command prompt and type the following command: