


This will create two partitions: the main MyVolume and a second called EFI which is used as a boot partition where your firmware will check for boot files. We'll want to use macOS Extended (HFS+) with a GUID partition map. Now we'll be formatting the USB to prep for both the macOS installer and OpenCore.
#Clean install macos monterey download
This method allows you to download much older versions of OS X, currently supporting all Intel versions of OS X(10.4 to current) If you want to check the integrity of your download, you can check this repository of checksums (opens new window), although do note that these are crowdsourced checksums and may not be a reliable way to check for authenticity. Note 2: Running Cmd+Shift+G in Finder will allow you to easily jump to ~/macOS-installerįrom here, jump to Setting up the installer to finish your work.Note: We recommend to move the Install macOS.app into the /Applications folder, as we'll be executing commands from there.Mount it and you'll find the installer application. Once finished, you'll find in your ~/macOS-Installer/ folder a DMG containing the macOS Installer, called Install_macOS_11.1-20C69.dmg for example. This is going to take a while as we're downloading the entire 8GB+ macOS installer, so it's highly recommended to read the rest of the guide while you wait. If you need a particular versions of macOS, you can select it by typing the number next to it.

Mkdir -p ~/macOS-installer & cd ~/macOS-installer & curl > installinstallmacos.py & sudo python installinstallmacos.pyĪs you can see, we get a nice list of macOS installers. Open a terminal window then copy and paste the below command:
