Unified EFI (UEFI)
- is a firmware boot order
- is an open standard independent of any programming language
- is a version 2 variant of Extensible Firmware Interface (EFI)
- encapsulates GRand Unified Bootloader (GRUB 2)
- when a computer is booted, UEFI loads files stored on the EFI System Partition (ESP) to start installing operating systems and various utilities
- UEFI was a direct replacement for BIOS, and whilst UEFI has been standard for over a decade, it’s commonly referred to as BIOS