Legacy BIOS V.S. UEFI BIOS

	Legacy BIOS	UEFI BIOS
Language	Interrupt	C (99%)
Resource	Interrupt Hardcode Memory Access Hardcode I/O Access	Driver \ Protocols
Processor	X86 16-bits	CPU Protected Mode (Flat Mode)
Target	Binary Code	Removable Binary Drivers
Expand	Hook Interrupt	Load Driver
OS Bridge	ACPI	Run Time Driver Service
3rd Party ISV & IHV	Bad for Support	Easy for Support and Multi-Platforms