EFI has various meanings in the Microsoft category. Discover the full forms, definitions, and usage contexts of EFI in Microsoft.
In computers with the Intel Itanium processor, the interface between the operating system and the computer’s low-level booting and initialization firmware. The interface is made up of data tables that contain platform-related information, plus boot and run-time service calls that are available to the operating system and its loader to provide a standard environment for booting an operating system and running pre-boot applications.
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