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When we create a new machine in the VirtualBox and set up an running process, the VirtualBox sets a default display resolution of 800×600(4:3). On the other hand, whilst doing the job in a Digital Machine, we usually need to have a screen resolution of our possess option. Therefore, there are two techniques to transform the resolution of any Virtual Equipment in VirtualBox.

  • By changing the display configurations of the Linux operating program
  • By installing VirtualBox Guest Addition Image

We will be applying the Ubuntu 20.10 running technique put in in VirtualBox and test both of the higher than-offered procedures to transform the monitor resolution.

Strategy 1: Improve Display screen Settings

The simplest and fastest way to have a display screen resolution of your decision is to adjust the screen resolution from the display configurations of the Linux functioning procedure.

Initially, go to the configurations of the working process.

In Ubuntu or any other Linux-centered operating method, open the application menu.

Lookup for “settings” and open up the settings by clicking on the Settings icon from the appeared lookup effects.

Scroll down through the remaining menu bar and click on the Display screen configurations.

In the display configurations portion, simply click on the resolution drop-down menu.

From the drop-down menu, simply just select the resolution of your preference.

Just after picking the ideal resolution of your selection, a environmentally friendly-coloured “Apply” button will surface on the best ideal corner of the window.

Click on the Apply button and verify the adjusted resolution by clicking on the “Keep changes” button that appeared in the pop-up box.

This is it. You have transformed the screen resolution of your individual preference by switching the show settings of the Linux Running program.

The limitation of this system is that we have a minimal variety of solutions available for modifying the display resolution.

For illustration, you want to have the display screen resolution precisely equal to the display sizing of your laptop, but that resolution is not out there. In this sort of a circumstance, setting up VirtualBox Guest Addition comes in helpful.

Set up of VirtualBox Guest Addition Impression

To put in guest more graphic in your Digital Machine, stick to the course of action provided underneath:

Move 1: Open the terminal of the running procedure and execute the command presented below to put in some necessary packages for installing Visitor Addition Picture:

For Ubuntu or Debian-centered running methods:

$ sudo apt put in develop-important dkms linux-headers-$(uname -r)

For CentOS or RHEL-dependent running systems:

$ sudo dnf put in epel-release
$ sudo dnf put in gcc perl dkms make kernel-devel kernel-headers bzip2

Just after setting up the required offers, insert the Visitor Addition CD graphic.

Action 2:  Click on the “Devices” in the menu bar of the Digital equipment and choose “Insert Visitor Addition CD image” from the “Devices” menu:

The installation will full in a when.

The moment it will get accomplished, it will inquire to reboot the method.

Stage 3: Restart the equipment, and if it will get effectively inserted and put in, the screen dimensions will automatically be resized according to the measurement of the window.

But if it is not doing work for you, then it implies that the visitor Addition Graphic is not inserted effectively. You have to insert it manually.

Insert Visitor Addition CD Image Manually

First, create a new /mnt/cdrom directory:

$ sudo mkdir -p /mnt/cdrom

Immediately after developing, mount the graphic to the /mnt/cdrom:

$ sudo mount /dev/cdrom /mnt/cdrom

Modify listing to the /mnt/cdrom and execute the “” script:

$ sudo sh ./VBoxLinuxAdditions.operate –nox11

As soon as the script has finished the execution, reboot the technique applying the command described below:

After rebooting the device, the screen dimension will regulate accordingly. Having said that, it will perform properly good now.

You can now effortlessly change to the full-monitor and perform with relieve on your Linux Digital Equipment.


This submit has included all the essential to professional-amount concepts and solutions to put in the Visitor Addition CD Picture to modify the resolution on any Linux functioning process in the virtual equipment utilizing the uncomplicated way and manually from the terminal. In addition, we have realized to resize the monitor resolution by changing the exhibit options of the operating process.

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