I don’t know how many of you use the Parallels Desktop App, but it is really handy for running virtual operating systems for Mac and Windows for testing purposes. Or, you may need to run older software on your Mac in an older version of macOS. However, there comes a time when you don’t need that virtual machine any longer. This article describes how to properly Delete a Parallels virtual operating system. Deleting unused virtual machines will definitely free up space on your main hard drive.