In my case I couldn't select a screen resolution higher than 800x600, but I choose the auto setting and this works fine for me. This means I can increase the window size and virtualbox automatically fit the screen resolution to my window size. There is also a menu-entry which says: "fit guest to window size" (or something like that)
In my case I couldn't select a screen resolution higher than 800x600, but I choose the auto setting and this works fine for me. This means I can increase the window size and virtualbox automatically fit the screen resolution to my window size. There is also a menu-entry which says: "fit guest to window size" (or something like that)