DEV Community


Discussion on: Explain the Boot Sequence Like I'm 5

lpasqualis profile image
Lorenzo Pasqualis

Taking the “like I am 5” part seriously.
You turn on the computer. The computer wakes up. The computer yawns and blinks. The first thing it remembers is the BIOS, which is part of the firmware. The BIOS makes the computer slap itself in the face. Slap! Ouch! That makes the computer wake up even more and load the boot loader from disk. The boot loader is like a piece of paper that tells the computer where to find the OS and how to load it. The computer reads the message on the piece of paper and loads the OS.
When the OS is loaded, the computer is up and ready for a morning run.