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Lesson 13. Startup Sequence > Understanding BootROM

Understanding BootROM

BootROM is a hardware component that contains the startup (boot) programs, which are the first processes that run when the computer is turned on. These programs include the Power-On Self Test (POST) and Open Firmware.

POST

The Power-On Self Test checks basic hardware components for functionality. POST sets components such as the processor, random access memory (RAM), and crucial hardware interfaces to states expected by the system. In addition, POST verifies that the RAM is functioning to operating specifications.


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