Power onPlatform initialization Operating system (OS) boot Shutdown Run Time (RT) OS-Present Application Final OS Environment Final OS Boot Loader.

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Presentation transcript:

Power onPlatform initialization Operating system (OS) boot Shutdown Run Time (RT) OS-Present Application Final OS Environment Final OS Boot Loader Driver Execution Environment (DXE) Boot Dev Select (BDS) Transient System Load (TSL) OS-Absent App UEFI Shell Transient OS Boot Loader Boot Manager Device, Bus, or Service Driver UEFI Interfaces EFI Driver Dispatcher Architectural Protocols Pre-EFI Initialization (PEI) CPU Init Chipset Init Board Init verify Security (SEC) PEI Core Pre Verifier

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