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The VirtualBox will automatically set the resolution and screen size.

You can also press the “Host+F ” key to set full-screen mode. The guest OS screen will adjust it accordingly: After restarting, you can adjust the window. Once the installation is completed, press “Enter” and “Restart” the guest OS to enable the changes to be made. The terminal will open, and the VirtualBox additions will begin installation: In the drop-down menu, select “Insert Guest Additions CD image”:Ĭlick on “Run” and enter the password for authentication: Select the VirtualBox window and open the “Devices” options from the top menu.

So, let’s begin the installation.įirstly, open VirtualBox and launch guest OS. You can easily share files, folders, clipboards, etc. To run any guest OS in full-screen mode in VirtualBox, install “VirtualBox Guest Additions.” Guest additions are drivers to integrate host and guest operating systems more effectively and enhance the functionality. This write-up focuses on the detailed procedure to make the VirtualBox screen adjust according to the window size and how to make VirtualBox window full screen? How to make VirtualBox full screen:īy default screen resolution of VirtualBox is 800×600, which is too small for a user to work on guest OS even if you press the “Host F” key, the resolution of the operational screen will remain the same, as it can be seen in the following image: So, is it possible to increase the screen resolution and make the guest operating system run on full screen in the host machine? Well, of course, you can make the guest OS screen larger and even increase the resolution. But by default, the screen resolution appears very small upon installing the guest operating system, as demonstrated in the image below.Īnd using the guest OS on such a small resolution is an uncomfortable job.

One of the key features of VirtualBox is that it supports multiple screen resolutions. Is it resource-intensive? No, it has built-in software virtualization technology that makes it less dependent upon host hardware. VirtualBox can host many operating systems at a time. VirtualBox is an open-source, multi-platform application developed by Oracle, primarily used as a virtualization tool for x86 hardware.