![]() if you have 32-bit efi, this commands will make no effect for you at all. –file /Volumes/YOUVOLUMENAME/System/Library/CoreServices/boot.efi Sudo bless –folder /Volumes/YOUVOLUMENAME/System/Library/CoreServices \ I think 2007 is when Apple went 64-bit only, but if yours is 32-bit, then 20.04 will not work. If something goes wrong, boot leopard/snowleopard dvd (or another installed osx system) and run this command in terminal The first thing to check is whether the macbooks processor is 32-bit or 64-bit. Now reboot, your mac should boot 64-bit kernel, but some models missing 64-bit intel video drivers, for example macbook4,1 with gmax3100, so only internal display will work, without qe/ci/opengl. Next step – add arch=x86_64 to file /Library/Preferences/SystemConfiguration/ to Kernels Flags section ![]() −−file /System/Library/CoreServices/boot64.efiĬommands starting with sudo will ask you for your password. Sudo bless −−folder /System/Library/CoreServices/ \ Sudo cp boot64.efi /System/Library/CoreServices/ It enables 64-bit kernel support for some macmini/macbook/ imac/macbookair models, which has 64-bit efi bootrom.ĭownload file to desktop, open terminal.app and run these commands To run 64-bit kernel on any mac with 64-bit efi you need patched boot.efi file Amit Singh recently made a post about patching boot.efi for 64-bit support on macbooks(with 64-bit efi).
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