The virtual disc where the system runs is completely customizable, and it lets you modify the virtual hardware to whatever specs you need, be it the processor, the RAM memory, or the storage capacity. VirtualBox is an open-source and multi-platform tool, available for Windows, Linux, and Mac OS X, as well as other operating systems, that lets you create virtual disc units where you can install a guest operating system, inside the one on your own computer, and use it as if it were actually installed.
