macos-virtualbox-vm | Instructions and script to help you create a VirtualBox VM

I've noticed that sometimes I need to go in and explicitly mark the iso as a Live CD in the VM settings in order to get the VM to boot from the image. If you try to start your VM and it does not boot up at all, check to make sure you have enough RAM to run your VM. Conversely, VirtualBox sometimes does not eject the virtual installer DVD after installation. If your VM boots into the installer again, remove the ISO in Settings -> Storage. VirtualBox uses the left command key as the "host key" by default. If you want to use it for shortcuts like command+c or command-v (copy&paste), you need to remap or unset the "Host Key Combination" in Preferences -> Input -> Virtual Machine. The default Video Memory of 16MB is far below Apple's official requirement of 128MB. Increasing this value may help if you run into problems and is also the most effective performance tuning. Depending on your hardware, you may also want to increase RAM and the share of CPU power the VM is allowed to use. When the installation is complete, and you have a fresh new macOS VM, you can shut it down and create a snapshot. This way, you can go back to the initial state in the future. I use this technique to test the mac-dev-playbook, which I use to set up and configure my own Mac workstation for web and app development. If for High Sierra you can not find the VirtualBox disk created inside the Disk Utility select View -> Show All Devices and format the newly visible device (Source: tinyapps.org).