Open the drive and install the VBoxWindowsAdditions-amd64.exe if your VM is 64 bit.

The installable is inserted in the CD drive of the VM.

Select Devices → Insert Guest Additions CD image….

Start your virtual machine in VirtualBox.

I can assure you that you will be able to change the VirtualBox screen resolution and make VirtualBox full screen.

In this article, I will share a step by step guide to fix the full-screen issue. To make VirtualBox full screen, you need to install VirtualBox Guest Additions on your virtual machine. It's not a big issue but is just annoying especially when it was working fine before.This VirtualBox full-screen mode does not work most of the time when the drivers are not updated while installing the VirtualBox software. I have re-installed the VirtualBox Guest Additions but this made no difference.ĭoes anyone have any ideas why this is happening and how I can resolve it. I can then switch back to fullscreen mode and everything is fine. If I then come out of fullscreen mode (with either the VirtualBox popup menu or Host+F) the desktop appears. After logging in the display just goes black and the desktop does not appear. Now what is happening is that when the guest OS boots the Mint login screen is not appearing fullscreen and is at a lower resolution (either 640x480 or 800圆00) in the middle of the display with the rest of the display black. After login the desktop appeared fullscreen without issue. At the Mint login screen the display was already at 1920x1080 resolution and fullscreen. Up until recently the guest OS has booted up in fullscreen mode with no issues. Guest OS: Linux Mint 20 with all current updates installed and with VirtualBox Guest Additions 6.1.16 installed running in fullscreen mode on monitor 2. Virtualbox 6.1.16 installed from the Mint software manager. Dual 1920x1080 monitors on nVidia GTX970 running nvidia-driver-460. Host OS: Linux Mint 20 with all current updates installed. Hi, I have recently started having an issue with Mint running as a guest in VirtualBox and wondered if anyone could offer any help.

Get out of virtualbox full screen