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OpenCore Legacy Patcher
A python program for building and booting OpenCore on legacy Macs, see Supported SMBIOS on whether your model is supported.
Supported features:
- System Integrity Protection, FileVault 2, .im4m Secure Boot and Vaulting
- Native OTA OS DELTA updates on all Macs
- Recovery OS, Safe Mode and Single-user Mode booting
- Zero firmware patching required(ie. APFS ROM patching)
- GPU Switching on MacBook Pro models(2012 and newer)
Note: Only clean-installs and upgrades are supported, installs already patched with Patched-Sur or bigmac cannot be used due to broken file integrity with APFS snapshots and SIP.
- You can however reinstall macOS with this patcher and retain your original data
Note 2: Currently OpenCore Legacy Patcher only supports macOS 11, Big Sur installs. For older OSes, please use Dosdude1's patchers
How to use
See the online guide on how:
Patcher Warnings
Since this patcher tricks macOS into thinking you're running a newer Mac, certain functionality may be broken:
- Boot Camp Assistant.app
- We recommend running the assistant on a natively supported OS, running via the patcher may result in unforeseen issues
- Legacy Windows Booting
- Currently OpenCore cannot boot MBR-based installs, so Ivy Bridge and older Machines may not be able to see Windows in OpenCore's Boot Picker
- Boot Buddy support
- Due to how OpenCore overwrites NVRAM , the usage of Boot Buddy and such tools are highly in-advised