In order to make a virtual machine feel even more like a regular computer, you may sometimes want to expand the guest OS screen so that instead of huddling in a window, it occupies your entire monitor, edge to edge.
In this fullscreen mode, primary OS and all of its programs are hidden. The Parallels Worksatation menu, toolbar, and status bar will be hidden as well.
If you want to run the virtual machine in fullscreen mode, make sure it's already running. Then do one of these three things:
Alt+Enter
on your keyboard.To shrink the virtual machine screen to the usual (windowed) mode:
Ctrl+Alt
or Alt+Enter
on your keyboard.