Presently, we support Windows, many Linux distributions, Mac OS X, Solaris and OpenSolaris.
So, to install Windows 8, for example, you will need a file that will easily grow to several 10 GB in size. While VirtualBox itself is very lean (a typical installation will only need about 30 MB of hard disk space), the virtual machines will require fairly huge files on disk to represent their own hard disk storage. So you’ll need that for the guest alone, plus the memory your operating system normally needs. Check the minimum RAM requirements of the guest operating system, they often will refuse to install if it is given less. So, if you want to run Windows 8.1 on Windows 7, you probably won’t enjoy the experience much with less than 2 GB of RAM. Plus the amount that the guest operating system needs. Basically, you will need whatever your host operating system needs to run comfortably. Depending on what guest operating systems you want to run, you will need at least 512 MB of RAM (but probably more, and the more the better). Any recent Intel or AMD processor should do. In order to run VirtualBox on your machine, you need: Installing and running a mail server becomes as easy as importing such an appliance into VirtualBox. With VirtualBox, such a complex setup (then often called an “appliance”) can be packed into a virtual machine. For example, installing a complete mail server solution on a real machine can be a tedious task. Software vendors can use virtual machines to ship entire software configurations.
Since you can configure what kinds of “virtual” hardware should be presented to each such operating system, you can install an old operating system such as DOS or OS/2 even if your real computer’s hardware is no longer supported by that operating system. This way, you can run software written for one operating system on another (for example, Windows software on Linux or a Mac) without having to reboot to use it.
VirtualBox allows you to run more than one operating system at a time. VirtualBox provides are useful for several scenarios: Running multiple operating systems simultaneously. The powerful virtualization product for enterprise as well as home use. Targeted at server, desktop and embedded use, it is now the only professional quality virtualization solution. VirtualBox is a general-purpose full virtualizer for hardware.
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