Before trying this at home, make sure you have virtualization switched on in your BIOS setup.
Enabling virtualization in the BIOS setup.
Boxes opens in the collection view. Click New to launch the wizard and begin the installation of a new box.
Click Continue at the wizard’s Introduction screen to display the Source Selection screen.
Choose from locally-stored .iso files, enter a URL or Select a file to navigate to your Continuous qcow image. (If Boxes isn’t running, and you insert a live image on a USB stick, a prompt will ask you if you want to launch Boxes to install it in a virtual machine.)
Boxes uses libosinfo to provide suitable default settings. The Customize button gives you access to the settings shown, System display name, Memory, and maximum Disk space allowed. When you’re happy with these values, click Create to launch the previously selected installer.
If you have virt-manager installed, launch it with the following command line for an alternate window into your virtual machine repository:
$ virt-manager -c qemu:///session
This interface can be used to fine tune your virtual machine properties, or install problematic OSes. (I used it for Debian and PC-BSD.)
VirtualBox opens in the VirtualBox Manager.
Click New to prepare a virtual machine.
Name your virtual machine and specify the OS, distribution and version.
Drag the slider to specify the RAM.
Tell VirtualBox how you’ll define the hard drive…
…and what size.
Click the folder button to open the file selector, and Start to complete the setup of the (empty) virtual machine.
Back in the VirtualBox Manager, click Start to launch the installer you selected.
Boxes is very much a GNOME application. It was one of the first GNOME 3 demonstration apps, and was designed to automate as much of the virtual machine creation process as possible using sensible defaults. Boxes 3.12 will bring more refinements to the interface.
VirtualBox looks pretty much the same wherever you run it, so it provides the feel of running a Windows application from the comfort of your GNOME desktop. I use it to run Fedora on my Windows machine at work, but will only continue to do so as long as I can’t run Boxes.