This repo includes an OpenCore EFI for the Dell Precision 7520 (i7-6820HQ, Skylake).
|Model||Dell Precision 7520|
|CPU||Intel Core i7-6820HQ|
|iGPU||Intel HD Graphics 530|
|dGPU||NVIDIA Quadro M2200 (disabled)|
|RAM||32 GB DDR4|
|WiFi||Intel® Dual Band-Wireless-AC 8265|
Download this repo and place the EFI folder into your internal drive’s EFI partition… That’s it.
There are two ways you can make a USB installer:
Have a working install of macOS, download the Installer from the App Store, then make a bootable Installer with
createinstallmedia by using this command in Terminal
sudo /Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
If you are using Windows, use macrecovery.py from the offical OpenCore release package.
After you have created a bootable Installer, copy the EFI folder to the EFI partition of the installer drive and install as usual (GUID Partiton Map; APFS). After the installation, mount the EFI partition of the installed OS and copy the EFI folder to its partition.
If you want to run Big Sur/Catalina, you have to replace AirportItlwm with the one appropiate to the version of macOS.