A virtual machine is a software computer like a physical computer, runs an operating system and applications. The virtual machine is comprised of a set of specification and configuration files and is backed by the physical resources of a host. Every virtual machine has virtual devices that provide the same functionality as physical hardware and have additional benefits in terms of portability, manageability, and security.
When do you may need virtual machine ? Many situations, if you have a computer with Windows 7 / 8 installed, then you have to install some programs which is incompatible with your current OS, so then you should going to use it. Or maybe you just want to try a New Operating System, but you are unsure to exactly install it on your Harddisk.
There are many Virtual Machines, but I’ll show you 5 of them : Continue reading