Designing and debugging your own operating system is one of the most fulfilling but technically demanding projects you can undertake as a systems programmer. You have to build every abstraction yourself – memory management, privilege levels, system calls, user-space transitions, and interrupt handling – all while dealing with the quirks of real hardware and complex …
After years of using macOS, I recently decided to install Linux on my old (unused) 13-inch MacBook Pro from 2019 – the one with the infamous Touch Bar and Apple’s T2 security chip. It wasn’t just an experiment. I wanted a fully working x64 based Linux desktop without buying any new hardware, and therefore I …
Switching My 2019 MacBook Pro to Linux: The T2-Ubuntu Journey + read more
In my last blog posting I have talked about how you can read and execute the Second Stage Boot Loader of your own Operating System. In today’s blog posting I want to show you in the first step how you can remove the dependency from floppy disks. Afterwards we will switch our CPU into the …
In the last blog posting I have talked about how to read files from a FAT12 partition and print out its loaded content to the screen. In today’s blog posting I want to talk more about how to implement a Second Stage Boot Loader that can be loaded into memory for its execution. But let’s …
Loading and executing the Second Stage Boot Loader + read more
In my last blog posting I have talked about how a PC boots up, and how you can write your own boot loader. As you have seen it is quite easy to spin up your own OS and print out some characters to the console. But at some point, you need to have the functionality …
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