# dortania/OpenCore-Legacy-Patcher

Experience macOS just like before

Repository: https://github.com/dortania/OpenCore-Legacy-Patcher
Canonical: https://ross.abutalabs.com/products/opencore-legacy-patcher
Homepage: https://dortania.github.io/OpenCore-Legacy-Patcher/
Language: Python
License: NOASSERTION
License Family: other
Topics: opencore, patcher, big-sur, macos
Last push: 2026-08-23T23:32:27+00:00

## Health v2 (maintenance only)
Score: 80/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 45, longevity 100
- inputs: {"age_days": 2109, "days_push": 10, "days_rel": 366, "gap_med": 11, "n_releases_24m": 12}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 18091, forks 1974 (observed 2026-08-28T04:11:26.307857+00:00)

## What it is
A Python-based GUI application that builds and installs OpenCore boot configurations to run modern macOS (Big Sur through Sequoia) on unsupported, older Macs as far back as 2007. It patches drivers and unlocks features like graphics acceleration, Sidecar, and AirPlay while preserving OTA system updates.

## Use cases
- install macOS Sequoia on a 2012 MacBook Pro
- get Metal graphics acceleration on an old Mac
- run Big Sur on an unsupported Mac from 2008
- enable Sidecar and AirPlay to Mac on older hardware
- keep receiving OTA macOS updates on a legacy Mac
- revive an old iMac with a newer macOS version

## When to choose
- you own a Penryn-or-newer Mac no longer supported by Apple and want to run Big Sur or newer
- you want native OTA updates, FileVault, and SIP on unsupported hardware
- you need graphics acceleration or unlocked features like Sidecar on old Macs

## When to avoid
- you want to run macOS on non-Apple (PC) hardware - use standard hackintosh tools instead
- you need macOS Mojave or Catalina support - dosdude1's patchers are recommended
- your install was already patched with other tools like Patched Sur - clean install required

## Facets
- artifact type: application
- maturity: active
- function: security, developer-tools
- domain: operating-systems, apple-ecosystem, hardware
- platform: python
- tags: opencore, hackintosh, legacy-mac, bootloader, macos-upgrades, graphics-acceleration, macos, desktop

## Member repositories
- dortania/OpenCore-Legacy-Patcher (main) score 80

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:26.307857+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 2026-08-29T17:02:09.890811+00:00, confidence not recorded.
  - readme: https://github.com/dortania/OpenCore-Legacy-Patcher (fetched 2026-08-28T04:11:26.307857+00:00, sha f846641abd77)
  - homepage: https://dortania.github.io/OpenCore-Legacy-Patcher/ (fetched 2026-08-29T08:00:11.186207+00:00, sha e9d0c65d7432)
- Data as of 2026-08-30T08:39:29.467469+00:00.