#osdev

LAL OS: Building an Independent Operating System with Delphi / Object Pascal ` qbs offical...

Hello everyone, Could anyone assist me with an issue I have been encountering recently? I am a...

I’ve been exploring a new way to develop my programming language and evolve it gradually alongside my...

Every x86 machine boots in 16-bit real mode and switches to protected mode in its first moments of life. That switch is a GDT, an IDT, one bit in CR0, and a far jump — and those tables are where ring 0 vs ring 3 actually comes from.

Most software engineers spend their careers working high up the abstraction ladder: web frameworks,...

512 bytes, no operating system, no standard library, no memory management — BIOS drops you at 0x7c00 in 16-bit real mode and everything after that is yours to build.

I've always wondered how operating systems work underneath the surface. How does my computer go from...

Step through a hand-written x86 bootloader in GDB, hit a far jump, and watch your function names turn to garbage. Nothing crashed — CS changed, and in real mode that moves every address out from under GDB's symbol table.

Hi everyone! I am a student from Spain who is working on MesaOS, a open source operating system that...

Hi, I am Fatafat321 Developer from Elikatta, Telangana, India. FatafatOS 81 Tiranga Edition - 50MB...

Há alguns anos publiquei o artigo Criando um sistema operacional (quase) do zero, contando os...

My website is now live! My website is hosted on GitHub pages, and coded by Gemini 3.5 Flash....