building an OS (all streams)

Currently Playing: building my own operating system in c++ (week 86, logging, assert)

(detailed timestamps in comments) #livecoding #operatingsystem #coding welcome: https://offlinemark.com/welcome discord: https://discord.gg/XsgpqpVxNu Welcome! I’m an aspiring systems programmer. Professionally, I used to work in infosec, but now I work on music production software & hardware. I stream OS/kernel development every week for 2 hours. (I’ve done this for over 75 weeks in a row! Sundays 10a-12 ET) From February 2024 to May 2025, I streamed myself doing all the labs for MIT’s old Operating Systems Engineering course (6.828 (2018)). Through doing this, I became very familiar with JOS, which is the x86 OS used for the course. This is the OS which I work with in all of my streams. I had almost no experience with OS development when I started, although I did have much experience with programming and low level concepts. I did the coursework because I wanted to write my own OS, but felt I wasn’t ready. Now, from May 2025 to present, I’m pursuing my own learning agenda with OS development. Eventually I will start writing my own OS when the time is right! If this resonates with you, please subscribe and I'll see you in a stream :) 00:00:00 start 00:02:36 Deleting legacy JOS operating system files and code cleanup 00:09:00 File reorganization and build system fixes 00:26:00 Creating basic logging functionality with variadic template functions 00:36:00 Testing and debugging the logging system with format printing 00:52:00 Adding assertion and panic macro infrastructure 01:15:00 Starting command line argument parsing and multiboot integration 01:30:00 Adding multiboot header support and string functions 01:45:00 Creating physical to virtual memory address conversion functions 02:00:00 Stream wrap-up and plans for future multiboot parsing work