Running multiple operating systems side-by-side gives you the chance to test applications, run platform-specific software, and tons more without ever rebooting. It's also extremely cool. Here's how to ...

I need to virtualise an install of Snow Leopard on my Intel-based iMac in order to continue to use an accounting app that isn't being updated anymore. I've set up a fair number of VMs so have a good ...

If you're on Windows, need to use OS X, but don't want to buy or build a new computer, reader Bobby Patton shows us how to run Snow Leopard in a virtual machine on Windows with just a few tweaks.

If you find yourself with a mismatched VirtualBox and VirtualBox Extension Pack release, such that VirtualBox itself cannot resolve, Jack Wallen shows you how to fix this from the command line.