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phase~1 min readUpdated 2026-06-21#phase#project#os

Phase 06 · The Project

Everything converges here. Building a small OS forces you to use the machine model, C, pointers, assembly, the toolchain, and systems concepts at once — because now you are the runtime. Structured as milestones from boot to a working shell.

Related notes

Low-LevelPhase 00 · OrientationWhere to start, what to ignore for now, and how the Low-Level Atlas is organized.Low-LevelPhase 01 · FoundationsHow the machine really works under the runtime — the mental substrate for everything that follows.Low-LevelPhase 02 · The C LayerC as a thin layer over the machine, undefined behavior, and manual memory — pointers, the heap, allocators, and the classic bugs.Low-LevelPhase 03 · Down to the MetalReading the assembly your compiler emits, calling conventions, and the full preprocess→compile→assemble→link toolchain with its debuggers.