The simple way to concurrently run two or more operating systems on a computer is to use virtual machines. This is where the free to use and very awesome Oracle VM VirtualBox comes into play. With VirtualBox, a guest operating system (such as Windows, Linux distros or many others) can be run at the same time as you use your Windows, Linux or Apple computer.
One issue that is quite common is that, once mounted and running, the guest OS display with a very small resolution screen. In the latest version of Ubuntu this tends to be a miniscule 640 x 480 pixels. Fortunately this is an easy problem to resolve.
How to increase VirtualBox Ubuntu screen resolution
Just follow the instructions below and in a few minutes you’ll have Ubuntu at full-screen height and width.
- Within Oracle VM VirtualBox Manager, start your Ubuntu VM.
- Click Devices then Insert Guest Additions CD image…
- Enter your password and accept any other notices.
- When you get the message Press Return to close this window … press Return (yes, this isn’t rocket science …)
- Restart the VM.
That’s it. Your Ubuntu VM screen will now be at maximum resolution.