behaved as if the system were running off a network disk. It was easier to produce; requiring only a single script to be added to an existing installation. Distributions of the live DVD have been made since its inception. Since then, it is notable that this method has been shown to work on normal Apple Mac hardware. Virtual machine It is possible to run macOS as a virtual machine inside other operating systems installed on standard PC hardware by using virtualization software such as Oracle's VirtualBox (though this is not officially supported by Oracle). It is also possible to install macOS on Windows and Linux versions of VMware software through the use of patches, even though the company states that running macOS is supported for VMware running on only Apple computers in compliance with Apple's licensing policies. macOS on a virtual machine is typically very slow due to the operating system's heavy use of hardware video acceleration, which macOS does not support when using the virtual video devices typically used by virtual machine software. A work around is to attach a physical GPU to a virtual machine, however this requires a macOS supported GPU in the system that is not in use by the host operating system. See also Macintosh clone – About clones and emulators of various Macintosh models List of computer system emulators – a list of Macintosh and other computer system emulators Mac transition to Intel processors Star Trek project References MacOS