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Sandy Bridge GA-Z68X-UDH3-B3 macOS 10.13 Utility and Kext Pack
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Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/USB -applicationpath /Applications/Install\ macOS\ High\ Sierra.app -no interactionĪfter approximately 25-35 minutes the process will finish and the USB will be renamed Install macOS High Sierra (wait for the “copy complete” message in the Terminal before continuing)ĭownload one of the following packs based on the CPU you are using and place a copy on your installation USB: Open Applications → Utilities → Terminal and enter the following command: Under Scheme: select GUID Partition Map (If the Scheme option is not visible, go to the View menu and select Show All Devices)
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Under Format: select Mac OS Extended (Journaled) Select the USB disk in the left pane (select the physical disk, not a volume on the disk) Open Applications → Utilities → Disk Utility
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Peripherals → Super IO Configuration → Super IO Chip → Serial Port A = Disabledĭownload the Install macOS High Sierra app from the App Store.Peripherals → SATA Mode Selection = AHCI.BIOS Features → Boot Mode Selection = UEFI Only.BIOS Features → Intel Virtualization Technology = Disabled.*Set to Disabled if your RAM modules do not support Intel XMP → Advanced Memory Settings → Extreme Memory Profile (X.M.P.) = Profile1* → Advanced Frequency Settings → Advanced CPU Core Features → CPU EIST Function = Disabled Press F12 at startup to enter BIOS setup and select the following: See the modified BIOS here if you want to use an NVMe SSD See the guide here if you are updating from a legacy version of the BIOS (version F12 or earlier)
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Update the BIOS to the latest UEFI version The ambiguity of that last statement is I did that awhile before writing this comment and I don't recall what I booted into first, only that it worked and was not hard to figure out what to do at that point.MacOS HIGH SIERRA 10.13.6 INSTALLATION on the GA-Z68X-UD3H-B3įollow these steps to perform a clean installation of macOS 10.13 High Sierra on your GA-Z68X-UD3H-B3 system. Installation will continue, or you will boot into the OS or get the Recovery Utilities menu (where macOS can be reinstalled from or Disk Utilities run). If the recovery partition isn't present and valid, these instructions won't work.Ĭlick the 2nd entry, you should see (and then click): If the 2nd partition isn't the recovery partition, look under the paths in the list to see if one of them is it. The second PCI path is probably to the recovery partition, the one you need to boot from. The first PCI path in the list is probably the boot partition that doesn't contain bootable firmware. You should see two entries in a list (they are cryptic looking PCI bus paths). Select Boot Maintenance Manager and click. You'll be brought into an EFI text-mode GUI. I was able to fix the UEFI problems as follows (credit to VirtualBox forum):
After manually directing EFI to boot into macOS for the first time, macOS automatically fixed-up the boot partition, and subsequent boots worked properly. In my case, after installing macOS into a Virtual Machine according to these instructions (running macOS installer from an ISO downloaded from Apple), on first boot, the boot partition was present but unconfigured (probably no boot image installed). By now you may have surmised boot.efi is an EFI standard filename that lives at an EFI standard path in a disk partition, and it contains os-specific boot firmware (e.g. Ultimately, the objective is provide a boot partition that contains macOS boot.efi. Your immediate objective is to help EFI locate and execute os-specific boot firmware. However, assuming you have a macOS recovery partition on that disk, it should contain a copy of boot.efi (macOS-specific boot firmware) that you can boot into the OS with. UEFI requires intervention because EFI firmware on the Mac's motherboard cant find valid OS-specific EFI boot firmware in the standard location on disk.