# ReturnInfinity/BareMetal-OS-legacy

BareMetal is a 64-bit OS for x86-64 based computers. The OS is written entirely in Assembly while applications can be written in Assembly, C/C++, and Rust.

Repository: https://github.com/ReturnInfinity/BareMetal-OS-legacy
Canonical: https://ross.abutalabs.com/products/baremetal-os-legacy
Language: Assembly
License Family: other
Topics: baremetal, assembly
Archived: true
Last push: 2017-11-20T15:29:43+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5584, "days_push": 3208, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1762, forks 296 (observed 2026-08-28T04:05:32.758665+00:00)

## What it is
BareMetal is a 64-bit operating system for x86-64 computers written entirely in Assembly, with a CLI, BMFS filesystem support, and 60+ system calls for apps written in Assembly, C/C++, or Rust. This legacy repo is no longer updated; development moved to the BareMetal-kernel repository.

## Use cases
- run a minimal mono-tasking OS for high performance computing cluster nodes
- build embedded applications on commodity x86-64 hardware
- learn x86-64 assembly programming and OS fundamentals
- experiment with a lean OS that uses all available CPUs
- boot a small OS from hard drive or network

## When to choose
- you need a minimal, high-performance mono-tasking OS for x86-64
- you want to study or teach operating system and assembly fundamentals
- you target embedded x86-64 applications without a general-purpose OS

## When to avoid
- you need a maintained or actively developed OS (use BareMetal-kernel instead)
- you need a general-purpose desktop OS with drivers and software ecosystem
- you need multi-tasking, networking stacks, or broad hardware support

## Facets
- artifact type: application
- maturity: abandoned
- function: cli, interpreter
- domain: operating-systems, embedded-systems, education, developer-tools
- platform: windows, cross-platform
- tags: assembly, x86-64, baremetal, os-kernel, hpc, mono-tasking, legacy, operating-system, linux, macos

## Member repositories
- ReturnInfinity/BareMetal-OS-legacy (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:32.758665+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 2026-08-30T03:26:49.721611+00:00, confidence not recorded.
  - readme: https://github.com/ReturnInfinity/BareMetal-OS-legacy (fetched 2026-08-28T04:05:32.758665+00:00, sha 1c56a21a3581)
- Data as of 2026-08-30T08:39:29.467469+00:00.