To make VirtualBox VM full screen in Windows 11/10, you have to install VirtualBox Guest Additions on the Virtual Machine. Follow the below-listed steps to install it.

With that in mind, open up your terminal window and get ready to type. I’m going to be resizing a VM named NGINX.vdi from its original 16GB to a 30GB disk.

On October 14, 23025, Microsoft will end support for Windows 10, meaning no more free security updates. Instead of disposing Windows 10, continue to use the system in a VM.

Once the software is installed, you're ready to spin up your first virtual machine. Creating a virtual machine with Boxes Open Boxes from your desktop menu.