When we run out of disk space on a physical hard drive, our options are limited. We can replace that drive with something bigger, but then need to worry about moving all of the data over successfully. If we are running some sort of RAID or Storage Spaces, then perhaps we could add a new drive to the array of disks, but that is only possible if we have set up the correct infrastructure to support this in the first place. Thankfully, when working with virtual machines that are running on virtual hard disks, we add a little bit more fluidity to our drive management capabilities. After all, these virtual hard disks are just files, right? So it makes sense that they are a little bit easier to manipulate than a mechanical disk with physical limitations. In this recipe, we are going to explore the options available to us inside the Edit Virtual Hard Disk Wizard. This wizard will allow us to choose a virtual hard disk, and then do one of three things with it. We can compact...