how to make virtualbox full screen ubuntu 12.04

The virtualization software of my choice in Linux is usually VirtualBox, but a just created VM running in VirtualBox it is displayed in a ridiculously tiny screen that it really does not invite you to use the system. There is always time to install it in my real computer, if after trying it, I decide I want to use it on a regular basis. When I run across a Linux distribution that I want to try like Antergos, Nutyx, etc, I find it way quicker and more comfortable to just install it in a VM than creating a new partition in my real computer. Want to install WordPress in a FreeBSD machine but you are unsure of the steps to follow, and do not want to mess up the real system? Once again, VM to the rescue. For example, if you want to try the swift language used to develop iOS applications in your Linux box, you can simply create a specific VM for that purpose.

Virtual machines came in handy when we need to create a testing machine for a specific project, or when we want to experiment with new development environments.

How to make virtualbox full screen ubuntu 12.04