A virtual machine is a computing resource that uses software instead of a physical computer to run programs and deploy applications. It operates by running one or more virtual “guest” machines on a ...

A virtual PC, also called a virtual machine or VM for short, is a fully-fledged PC system that runs in a window on your PC but remains isolated from it. The virtualization software required for this, ...

I’ve been running virtual machines for nearly 20 years at this point, and I’ve made a lot of mistakes along the way. From incorrect RAM allocation to forgetting to unmount the installation ISO, I've ...

Companies like VMware, and more recently XenSource, got their start with standalone virtualization software that let customers run several operating systems simultaneously on a single computer. But ...

Virtual PCs have important uses, such as providing a dedicated environment for testing new applications or enabling the parallel operation of multiple operating systems. But the virtualization ...

Sun’s VirtualBox lets you install multiple operating systems, offering greater speed and ease of use than its competitors. Whether you prefer Linux, Windows, or Mac OS X, you can probably get almost ...

If you've ever wanted to test the Linux operating system, one of the easiest ways of doing so is as a virtual machine. Jack Wallen shows you how it's done. Linux is everywhere — in phones, smart ...

Qubes OS defines itself modestly as “a reasonably secure operating system.” It might actually be one of the safest operating systems, often used by pros who are most concerned with computer security.

The term typically refers to running multiple operating systems simultaneously on the same computer. It’s long been around on high-end servers, but new software and hardware options mean mainstream ...