IN THIS CHAPTER
To begin understanding how your Linux computer works, you need to know how it starts. Booting in Linux is a three-step process, as the computer’s basic input/output system (BIOS) starts the machine’s hardware without a care as to what operating system its owner (you) wants to run.
It hands control over the machine to a boot manager (such as LILO or GRUB), which does care about finding at least one operating system on the machine.
Finally, you tell the boot manager what file system to run, and it does. ...