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Create a VM with 2cores, 4GB RAM, 40GB HDD, and all the PAE/NX/EFI stuff enabled.Hdiutil convert ~/Desktop/InstallSystem.dmg -format UDTO -o ~/Desktop/HighSierra.iso Hdiutil detach /Volumes/Install\ macOS\ High\ Sierra Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/install_build Hdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_build Hdiutil create -o /tmp/HighSierra.cdr -size 7000m -layout SPUD -fs HFS+J

Create a temporary disk image to create the bootable installer:.Download High Sierra from the App Store.Instructions heavily inspired from this page - I just could not find one direct, straight set of commands that worked reliably. If you are having issues installing VirtualBox, you may need to whitelist some Kext bundle/IDs. If you use VMware Fusion, instructions for creating the ISO should be the same, and the rest should be easier. Most of these instructions could probably be leveraged to run a macOS VM on a Windows host, but I’m sure that would violate the EULA and require some additional tweaks. It is not as straight forward as I expected, and as such, I am posting it here. Part of those instructions covers setting up a virtual machine to run macOS on VirtualBox, on a macOS host. Special thanks to TechGrlTweeter for being the first to go through this and finding a bunch of small problems with command formatting, and suggesting other improvements. The best Apple/Mac focused conference out there!Īs I ( Guillaume Ross) am hosting a security workshop at the MacAdmins Conference at Penn State on July 10th, I need to send instructions to attendees.