I want to learn how to build an OS and thought that a Raspberry Pi would be perfect to experiment with. However, as I have no prior knowledge of building operating systems, I am looking for a guide or tutorial on how to build one. The best guide I've found so far is this guide but it is a few years old and I'm worried that not all of the steps will work if I purchase a brand new Raspberry Pi.
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Why would it not work on a newer Pi? All of the latest Pi's have been designed to be backwards compatible with the original Pi. The guide says some things may not work with the +models or the Pi 2. If its going to be such an issue the original Pi is certainly not expensive. The more Pi's the better!– Darth Vader ♦Jul 1, 2016 at 14:58
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2 Answers
Have a look at some of these guides.
armhf
Manual Build Howto
embedded-distro
Build your own distro
Goodluck
As you have chosen RPi for the same, the following book - ARM System Developer's Guide by Andrew N. Sloss, Dominic Symes, Chris Wright and John Rayfield - should be a good option.
They explain with code on how to implement a small and simple bootloader, OS for ARM.
