The document provides instructions for installing Mirantis OpenStack on VirtualBox using automated scripts or manually. It describes:
1. Installing Mirantis OpenStack using automated Mirantis VirtualBox scripts that provision virtual machines with required settings. This is the recommended method.
2. Installing Mirantis OpenStack manually by configuring virtual machines, networks, and mounting the OpenStack ISO image, which requires more steps but can be used if the scripts cannot be run.
3. Hardware and software prerequisites for running the scripts or manual installation, such as supported host operating systems, VirtualBox versions, and software requirements.