I recently installed ubuntu on a Virtual Machine on Windows. It works perfectly fine, except that I can only use it in the minimized version. Several attempts to resolve this issue have been made by myself:
Host+F just shows me the exact same screen surrounded by black screen.
On ask ubuntu the following advise was given: Can't get fullscreen resolution on Ubuntu hosted on VirtualBox
I was considering the advise from the community yet there have been the following issues The option Auto-resize guest display is disabled and I couldn't find out how to fix it. Also under Settings for display most of the icons were disabled. The only thing left to adjust was the scale factor. I configured it to be 150% instead of 100%. Now the screen is bigger but blurred.
The following source provided different information on how to solve this problem.
https://ma.ttias.be/auto-resize-screen-size-windows-10-guest-vms-virtualbox/
Nevertheless, when click "Insert guest additions CD image" the following Error Message appears:
Error Message: Insert guest additions CD image
Edit: Error Message with details
If somebody could find out, why I can't use most of the icons in this OS or give me a different advise on the topic respectively the aforementioned error message I would be very grateful.
.isofile still appearing as “inserted” in VirtualBox? If so, you’ll need to eject/remove it before the guest additions can be used. – matigo Aug 24 '21 at 12:53