You may have heard about unified extensible firmware interface (UEFI) but been unsure what it means. I usually hear it in reference to some "secret sauce" Macintoshes use "to keep Windows from being loaded on them" or perhaps, "to keep regular PCs from loading OS X." While it is true that Macs use UEFI, there is a lot more to the story than that. Here are 10 things you should know about UEFI. 1: UEFI is the replacement for BIOS The BIOS (basic input/output system) has been at the heart of the PC design for well over 30 years now. It is the piece of firmware that provides the operating system with a standard interface to the functionality of the computer. Unfortunately, its design is quite outdated, carrying a number of limitations that are not acceptable in the current age of computing. UEFI is the replacement for BIOS, and it brings with it a host of modern functionality to carry PCs through the next few decades. 2: It enables better disk support
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