See The World in The other World, Would You Like to?
Did You heard VMware? If you heard VMware so You will be easy to guess what VBOX is?
VirtualBox is an application that works on Linux operating System and It has functional to installed a operating system in Linux Operating System. Virtual Box is made by SUN. SUN VirtualBox is the best virtual machine on linux Operating System. and We as a user don't need to consider must format HDD. because Operating System in that file to install the virtual box is only a regular file. Please check it's benefits:
Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), Solaris and OpenSolaris, and OpenBSD, and etc.