It will appear as EFI on Install macOS Catalina Launch Clover Configurator from the Utility and Kext Pack and click Mount EFIĬlick the Mount Partition button to the right of the EFI partition of your USB. Sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/USB -nointeractionĪfter approximately 25-35 minutes the process will finish and the USB will be renamed Install macOS Catalina (wait for the “Install media now available” message in the Terminal before continuing)ĭownload the GA-Z68X-UDH3-B3 macOS 10.15 Utility and Kext Pack 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) MAC OS KEXT UTILITY MAC OSUnder 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 Peripherals → Super IO Configuration → Super IO Chip → Serial Port A = Disabledĭownload the Install macOS Catalina app from the App Store.Peripherals → SATA Mode Selection = AHCI. BIOS Features → Boot Mode Selection = UEFI Only.BIOS Features → Intel Virtualization Technology = Enabled.*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) Update the BIOS to the latest UEFI version MacOS CATALINA 10.15.6 INSTALLATION on the GA-Z68X-UD3H-B3įollow these steps to perform a clean installation of macOS Catalina on your GA-Z68X-UD3H-B3 system.Ī Time Machine backup of your current installation will allow you to easily restore files with Migration Assistant after a clean installation.Īn Ivy Bridge CPU with Intel HD Graphics 4000 or a discrete graphics card compatible with Metal will be necessary to install macOS Catalina.
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