A Journey Through the Secrets of Firmware: From BIOS/UEFI to OS | HackerNoon
Briefly

"Firmware serves as a bridge between the hardware and the operating system, enabling communication and initialization of system components essential for startup processes."
"The boot process involves multiple stages, including First-Stage Boot Loader and Second-Stage Boot Loader, each crucial for transitioning from hardware initialization to loading the operating system."
Read at Hackernoon
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