OpenCore vs rEFInd

OpenCore is a bootloader distributed with a development SDK. Its repository includes UEFI support libraries for Apple-specific UEFI drivers, with support for loading Apple disk images and manipulating PNG images. The libraries also cover Apple PE image signature verification, supplemental Apple UEFI secure boot code, XNU kernel driver injection, and a patch engine. For configuration, they parse plist files; OcGuardLib provides safe integral arithmetic, type-alignment checks, and a UBSan runtime. The project lists UEFI and BIOS support, multiboot, boot-entry editing, and boot-menu customization. It is described as multiplatform, with Linux, macOS, Windows, and self-hosted among the listed platforms. OpenCore is free and open source under the BSD-3-Clause license. Release source archives are available as zip and tar.gz files, including version 1.0.7. The README points users to discussion forums in several languages, including KVM configuration discussion. Documentation also lists third-party kernel extensions and says that list is informational and provided without warranty.

rEFInd is a free boot manager, forked from rEFIt, that scans for boot loaders and lets users select an operating system or utility at startup. It is intended for EFI-based computers, not older BIOS-based machines, and works with EFI 1.1 and UEFI 2.x. It can find EFI loaders, BIOS/CSM/legacy loaders, and boot options saved in firmware NVRAM. For Linux, rEFInd can detect kernels with EFI stub support, locate initrd files, and read kernel options from a refind_linux.conf file. It supports text and graphical operation, with configurable resolution, backgrounds, icons, and fonts. It can communicate with Shim to authenticate boot loaders using valid UEFI Secure Boot keys, Shim keys, or Machine Owner Keys. Included filesystem drivers cover ext2/3, ext4, Btrfs, ReiserFS, HFS+, and ISO-9660; the NTFS driver is not compiled by default. Downloads include ZIP, RPM, Debian, CD-R image, and USB flash drive image packages. Installation scripts and manual procedures cover Linux, macOS, and Windows. The maker describes it as beta-quality, with uneven testing across architectures.