# SamyPesse/How-to-Make-a-Computer-Operating-System

How to Make a Computer Operating System in C++

Repository: https://github.com/SamyPesse/How-to-Make-a-Computer-Operating-System
Canonical: https://ross.abutalabs.com/products/how-to-make-a-computer-operating-system
Homepage: https://samypesse.gitbook.io/how-to-create-an-operating-system
Language: C
License: Apache-2.0
License Family: permissive
Last push: 2021-12-16T09:10:55+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4660, "days_push": 1721, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 22411, forks 3455 (observed 2026-08-28T04:11:32.608556+00:00)

## What it is
An online book and course teaching how to build a simple UNIX-like operating system from scratch in C/C++, covering x86 architecture, memory management, multitasking, syscalls, drivers, and filesystems. The repository includes step-by-step source code for the OS being built.

## Use cases
- learn how to write an operating system from scratch
- understand x86 boot process and GRUB
- study memory management and virtual memory implementation
- learn how syscalls and userland work
- build a hobby OS in C++
- understand interrupt handling GDT and IDT
- implement a simple filesystem like EXT2

## When to choose
- you want a guided, step-by-step introduction to OS development
- you prefer learning by reading a book alongside working source code
- you are a beginner to intermediate developer curious about low-level systems programming

## When to avoid
- you need a production-ready or modern OS kernel
- you want coverage of ARM, RISC-V, or modern 64-bit architectures
- you need an actively maintained course with recent updates

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation, developer-tools
- domain: operating-systems, tutorials, education
- platform: cpp, c
- tags: operating-system, osdev, x86, tutorial, online-book, gitbook, unix-like, linux

## Member repositories
- SamyPesse/How-to-Make-a-Computer-Operating-System (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:32.608556+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:57:10.728875+00:00, confidence not recorded.
  - readme: https://github.com/SamyPesse/How-to-Make-a-Computer-Operating-System (fetched 2026-08-28T04:11:32.608556+00:00, sha ab59dbf451ab)
  - homepage: https://samypesse.gitbook.io/how-to-create-an-operating-system (fetched 2026-08-29T07:55:29.768858+00:00, sha 0f115fc25d48)
- Data as of 2026-08-30T08:39:29.467469+00:00.