Based on your descriptions, your failure to use this command is related to the poor support from your driver for your graphics card. So now that’s sorted out I can get on with some editing.After my research, the grubby command may only work for a few screen resolution. So I guess this counts as a minor bug in VirtualBox, but not much of an issue.

Now, the fix is easy - use the four-pointed cursor (yours may look different) to resize the bottom border by clicking and dragging it all the way to the bottom of the screen: Dragging the top edge of the bottom border back down to the bottom. Since VB is drawing the border itself, and knows it is a border and not the VM screen, presumably it doesn’t capture it when Host-E is used to grab the screenshot, which is why the Host-E screenshot actually looks OK - even though the user (me in this case) can’t see anything! But Gimp captured what was really there. What seems to have happened is that the narrow border around the screen, drawn I think by VirtualBox itself, is covering the VM screen. Now, if we look more closely at the second image, we can see a cursor (near the top): Close up of the cursor. Here’s what happens when I do that (grabbed this screen using Gimp, since Host-E gave an image identical to the above, which was not what I actually saw): The Win 7 machine on going to full screen using Host-F. Now, to get full screen, I hit ‘Host-F’ where the Host key is usually right Control. VirtualBox version 5.1.30.īoots fine, behaves well… here is the resulting desktop, captured using Host-E: Win 7 32-bit VM in VirtualBox.

32-bit Win 7 VirtualBox virtual machine (VM) running atop Linux (Debian Old Stable, 7.11).

Virtualbox full screen control