Within Minecraft you simply place a PC case block and then use it to create virtual hard drives to install operating systems from ISO files. The mod uses VirtualBox, free and open-source virtual machine software, to run operating systems like Windows 95.
A new VM Computers mod has been created for Minecraft that allows players to order computer parts from a satellite orbiting around a Minecraft world and build a computer that actually boots Windows 95 and a variety of other operating systems. If you’ve ever wanted to build a real and working Windows 95 PC inside Minecraft, now is the time.