Developer Builds Minimal 'mintOS' Using C, Assembly, GRUB, and QEMU

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A developer has published a hands-on guide detailing how to build a basic custom operating system called mintOS from scratch. The project uses C and x86 assembly to write a kernel that displays text on screen via VGA text-mode memory at address 0xB8000. GRUB serves as the bootloader, reading a grub.cfg configuration file to load the compiled kernel binary into RAM at startup. Supporting tools include GCC for compiling C code, a linker script to arrange the kernel in memory, and QEMU to emulate and test the OS virtually. The result is a minimal bootable OS that prints a static message, demonstrating the full boot chain from BIOS/UEFI through GRUB to the running kernel.

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