This repository contains the OpenCore configuration and necessary files to run macOS High Sierra 10.13.6 on ASROCK Z390 Phantom Gaming-ITX/ac with i9-9900K and GTX 1080 Ti.
- Motherboard: ASROCK Z390 Phantom Gaming-ITX/ac
- CPU: Intel Core i9-9900K
- GPU: NVIDIA GeForce GTX 1080 Ti
- RAM: [Your RAM specifications]
- Storage: [Your storage specifications]
- WiFi/Bluetooth: [Your WiFi/Bluetooth card model]
- macOS: High Sierra 10.13.6 (17G66)
- OpenCore: 1.0.1 (Consider updating to latest version)
- NVIDIA GTX 1080 Ti (with Web Drivers)
- Intel UHD 630 Graphics
- Audio
- Ethernet
- USB Ports
- Sleep/Wake
- Power Management
- [List any non-working features]
- Create a bootable USB installer for macOS High Sierra
- Clone this repository and copy the EFI folder to your USB drive's EFI partition
- Boot from the USB drive and install macOS
- After installation, copy the EFI folder to your system drive's EFI partition
- Install NVIDIA Web Drivers for your specific macOS version
- [Any other post-installation steps specific to your build]
- Disable:
- Secure Boot
- CSM (Compatibility Support Module)
- Enable:
- EHCI/XHCI Hand-off
- Above 4G decoding
- Set SATA Mode to AHCI
- This build is specifically for macOS High Sierra 10.13.6 due to NVIDIA GTX 1080 Ti compatibility
- Ensure you're using the correct SMBIOS for your configuration (iMac19,1 recommended for this build)
- Always backup your data before making changes to your system
If you encounter issues:
- Enable verbose boot by adding
-v
to your boot-args - Check your config.plist for any misconfigurations
- Ensure all kexts and drivers are up to date
- Refer to OpenCore Install Guide for detailed troubleshooting
- Acidanthera for OpenCore and many kexts
- Dortania for their detailed OpenCore guides
- OpenCore Install Guide
- NVIDIA Web Drivers
This project is for personal use and educational purposes only. Use at your own risk. I am not responsible for any damage to your hardware or any loss of data.