[ Thanks to IdaAshley for this link.
]
“In the early days, bootstrapping a computer meant feeding a
paper tape containing a boot program or manually loading a boot
program using the front panel address/data/control switches.
Today’s computers are equipped with facilities to simplify the boot
process, but that doesn’t necessarily make it simple.“Let’s start with a high-level view of Linux boot so you can see
the entire landscape. Then we’ll review what’s going on at each of
the individual steps. Source references along the way will help you
navigate the kernel tree and dig in further…”