UEFI
Pre-operating system interface
UEFI stands for Unified Extensible Firmware Interface, the software that runs when a computer first powers on, before the operating system loads.
It replaced the older BIOS system starting in the 2010s, offering faster boot times, support for larger hard drives, and a graphical interface.
The UEFI settings let you change the boot order.
partitioning
Pre-trained text generator
hardware
Storage persisting without power
- flash memoryErasable non-volatile semiconductor storage
- POSTStartup hardware verification
- chipsetCoordinated circuit collection
- hardware abstractionLayer hiding physical components
booting
Initial startup program
- boot managerStartup operating system selector
- boot sequenceComputer startup process
- multibootMultiple OS installation
- boot orderDevice loading sequence at startup
security
Confirming a signing's authenticity
- digital certificateCryptographic authentication document
- shimThin piece for leveling
- attestationFormal declaration confirming truth
firmware
Replacement embedded software installation
GPT
Pre-trained text generator
NVRAM
Storage persisting without power
- flash memoryErasable non-volatile semiconductor storage
- POSTStartup hardware verification
- chipsetCoordinated circuit collection
bootloader
Initial startup program
- boot managerStartup operating system selector
- boot sequenceComputer startup process
- multibootMultiple OS installation
signature verification
Confirming a signing's authenticity
- digital certificateCryptographic authentication document
- shimThin piece for leveling
- attestationFormal declaration confirming truth
firmware update
Replacement embedded software installation