I seem to have a little problem with Dosbox with regards to fullscreen mode. In windowed mode everything works fine, but as soon as I switch to fullscreen mode(alt + enter) the screen doesn't actually go to fullscreen ...

Even when I adjust the size settings of the monitor it only goes so far and there is a still a black border around. It approximately takes up 3/4 of the screen, but the rest is black.

I apologize if this has been asked already, but is there a fix?

Thanks