How do I change the VirtualBox VM macOS High Sierra guest to full screen? When I click Full-Screen mode under the top menu bar under View it has huge black borders around the VM, while the VM is centered in the middle of the screen. I am running from a macOS High Sierra host. This is my VirtualBox version, Version 6.1.12 r139181 (Qt5.6.3). My computer is a Macbook Pro 13.3 inch.
Here is a screenshot showing the issue of the huge black border around the VM:
Does anyone know how to truly make the VM go fullscreen?
1 Answer
Power Off MacOS guest and click Settings of it. Go to Display tab and make sure Video memory is 128 MB or above and checkmark "Enable 3D acceleration".
Now open Command Prompt as Administrator in Host Windows system. Run cd "C:\Program Files\Oracle\Virtualbox" or if the installation directory is different then use that. Then run vboxmanage setextradata "VM_Name" VBoxInternal2/EfiGraphicsResolution 1920x1080.
If you are running Linux/MacOS Host, then directly execute the second command, no need to change directory using cd.
Now boot the VM and click Full Screen mode in View menu. Go to System preferences > Display in MacOS guest and set resoulution to 1920x1080.
Hope that helps
21
