Open Core


Open Core


Key details of Open Core

  • More OS Support!
    • OpenCore now supports more versions of OS X and macOS natively without painful hacks Clover and Chameleon had to implement
    • This includes OSes as far back as 10.4, Tiger, and even the latest builds of 13, Ventura!
  • On average, OpenCore systems boot faster than those using Clover as less unnecessary patching is done
  • Better overall stability as patches can be much more precise:
    • macOS 10.15.4 update(opens new window)
    • AMD OSX patches not needing to update with every minor security update
  • Better overall security in many forms:
    • No need to disable System Integrity Protection (SIP)
    • Built-in FileVault 2 support
    • Vaulting (opens new window)allowing to create EFI snapshots preventing unwanted modifications
    • True secure-boot support
      • Both UEFI and Apple’s variant
  • BootCamp switching and boot device selection are supported by reading NVRAM variables set by Startup Disk, just like a real Mac.
  • Supports boot hotkey via boot.efi – hold Option or ESC at startup to choose a boot device, Cmd+R to enter Recovery or Cmd+Opt+P+R to reset NVRAM.


Developer's Description

OpenCore is what we refer to as a “boot loader” – it is a complex piece of software that we use to prepare our systems for macOS – specifically by injecting new data for macOS such as SMBIOS, ACPI tables and kexts. How this tool differs from others like Clover is that it has been designed with security and quality in mind, allowing us to use many security features found on real Macs, such as System Integrity Protection (opens new window)and FileVault (opens new window). A more in-depth look can be found here: Why OpenCore over Clover and others

Operating System


Release Date