What Is UEFI (Unified Extensible Firmware Interface)?

November 14, 2022

Unified Extensible Firmware Interface, or UEFI, is firmware installed on a motherboard and starts when you turn on the PC. This special software loads before the operating system and checks if all components are connected and working properly before letting the OS take over.

As opposed to BIOS (basic input/output system), which has limitations in how many commands it can run concurrently, UEFI is more flexible, faster, and easier to use as it looks like a slim version of an OS. Most PC systems today use UEFI instead of BIOS.

Anastazija is an experienced content writer with knowledge and passion for cloud computing, information technology, and online security. At phoenixNAP, she focuses on answering burning questions about ensuring data robustness and security for all participants in the digital landscape.