Operating Systems

Build an OS from Scratch

A 64-bit kernel you booted yourself, and then kept building until it was a system you could use: a boot stub and bootloader you wrote, long mode, console and serial drivers, GDT/TSS and an IDT that catches CPU exceptions, live timer and keyboard interrupts, a physical frame allocator and page tables and a working heap, a scheduler that becomes preemptive, ring 3 with syscalls and per-process address spaces, a block device and a filesystem, and the shell you type into at the end — every stage verified by booting your own kernel in QEMU.

Part of Operating Systems in Rust · 19 labs · rust · ~15-20 hrs