One-key semi-automatic installer of macOS Mojave 10.14.3 on VirtualBox

The "one key" is enter, which has to be pressed whenever the virtual machine is ready for the next command. (Contrary to the script's name, the user has to use more than one key! There is one instance when the "host key" is used to release the mouse from the virtual machine, and one instance where the user has to choose [y]es or [n]o!)

The goal of the script is to allow for a very easy installation without any closed-source additions or extra bootloaders.

Tested on Cygwin, should work on Linux distros.

iCloud and iMessage connectivity

iCloud and iMessage and other connected Apple services require a valid device serial number. Set it before the installation by replacing NOTAVALIDSN0 with a valid serial number, or after the installation with VBoxManage setextradata "${vmname}" "VBoxInternal/Devices/efi/0/Config/DmiSystemSerial" "${serialnumber}". An invalid serial number that matches the correct structure for the device name and board ID might work, too.

Storage size

The script assigns the minimum required storage size for the installation. After the installation is complete, the virtual disk image may be increased through VirtualBox, and then the macOS system partition size may be increased through Disk Utility inside the virtual machine by creating a new APFS container and subsequently deleting it, allowing the system APFS container to take up the space.

Unsupported features (audio, USB devices)

Section B.(iii) of the macOS Mojave software license grants the user a license to run macOS virtualized only on a Mac computer that is already running macOS Mojave. Oracle, the company that develops VirtualBox, actively suppresses running VirtualBox macOS guests on Windows or Linux hosts. This means that some hardware issues like the lack of proper audio and USB support will not be developed or maintained by Oracle.

Developing and maintaining VirtualBox features is beyond the scope of this script.

Dependencies

• VirtualBox≥5.2 with Extension Pack
• Bash≥4 (run on Windows through Cygwin)
• unzip, wget (install through package manager)
• dmg2img (install through package manager on Linux; let the script download it automatically on Windows)