VirtualBox Full Screen Ubuntu
VirtualBox is free software that permits us for virtualizing the architecture of the X86 computer. The host is known as an operating system on which VM executes. VirtualBox can execute on macOS, Linux, or Windows as its host OS. Virtual Machines can execute several operating systems on a physical computer, financing costs, time, and storage capacity.
Virtual machines let legacy applications execute on new software, decreasing the migration cost. The VirtualBox provides several features and one of them is the full-screen mode. The 20.04 version of Ubuntu Linux System by default opens up with a windowed mode on the Oracle VirtualBox.
While the guest operating system is operating, Oracle virtual machine VirtualBox produces an isolated environment for it. We can also modify it into the full-screen mode. We need to follow this article for switching from the windowed mode to the full-screen mode and the full-screen mode to the windowed mode.
Introduction to VirtualBox
Oracle VM VirtualBox (formerly Innotek VirtualBox, Sun xVM VirtualBox, and Sun VirtualBox) is a hypervisor (type-2) for x-86 virtualization integrated by Oracle Corporation.
Originally, VirtualBox was made by Innotek GmbH, which was inherited in 2008 by Sun Microsystems, which was in turn inherited in 2010 by Oracle. VirtualBox can be installed on OpenSolaris, Solaris, Linux, macOS, and Microsoft Windows. Also, there are ports to Genode and FreeBSD. It supports the management and creation of guest virtual machines running OSx86, Haiku, Solaris, OS/2, BSD, Linux, and Windows, as well as limited macOS guest virtualization on Apple hardware.
For a few guest operating systems, the "Guest Additions" package of system applications and device drivers is available, which improves the performance, especially graphics, and permits automatically modifying the resolution of the guest operating system when the virtual machine window is resized on the host operating system.
It was published under the GNU General Public License terms and the CDDL for almost all source distribution files. VirtualBox is open-source and free software so, the Extension Pack is the proprietary software.
Features of VirtualBox
Some important features of VirtualBox are mentioned below:
Method to modify the windowed mode to the full-screen mode in Ubuntu
We need to open the virtual machine to modify the windowed mode to the full-screen mode on the Ubuntu system. Once we are logged in with a user, we need to see the menu bar shown on the top-most side of the virtual machine. This menu bar contains the below options:
We need to see the View option as displayed in the following screenshot:
We will get some extra options like Adjust Window Size, Status Bar, Menu Bar, Recording, Take Screenshots, Scaled Mode, Seamless Mode, Full-Screen Mode, etc upon pressing the View option.
The different modes are explained as follows for computer understanding of this article:
The display of the virtual machine will be scaled to the size of the window if the scale mode is activated. If we have several machines functioning and wish to glance at one of them while it is going on inside the background, it is an amazing option.
Although, if the display screen of the virtual machine is small because it is executing an old operating system, it can be beneficial for increasing a window. We need to hit the shortcut keys, i.e., "Host key + C" or through the View menu, select the option, i.e., Scaled Mode. We need to again hit the shortcut keys, i.e., "Host key + C" for exiting Scaled Mode.
The window background of the guest operating system will be hidden via the VirtualBox with the seamless mode. Hence, making it occur as though the applications of the guest operating system are executing on the desktop of the host operating system. On the other hand, the running programs will not occur on the regular taskbar of our operating system.
Simultaneously, we need to click on the Host key for using this functionality. It means the control key on the right side. However, it is displayed on the bottom-right side and L of the virtual machine window frame. Also, we may modify the seamless mode by visiting the View menu and choosing the Switch to Seamless Mode option.
Simply, we need to again hit the Host key and L to switch from the seamless mode. Also, we will find a VirtualBox menu on our taskbar that we may consider by hovering our mouse on it. We need to go back to the View option and select the Switch to Seamless Mode option for deactivating the seamless mode.
We will assume the application for entering the full-screen mode whenever we click on the Maximize button inside the upper-right side of the window when functioning a VirtualBox virtual machine. It was not the situation, the window extends, but other applications executing on the Windows taskbar stay visible. We need to simultaneously click on the "Host key" and "F" for activating the full-screen mode.
Second, choose the "Switch to Full Screen" option through the View menu at the Window's top corner. We will see a dialogue box along with some details regarding the full-screen mode of the VirtualBox. If we wish to enter the full-screen mode, we need to choose the box which is labeled "Do Not Show This Message Again" and click on the Switch button as displayed in the following screenshot:
We can switch to the windowed mode by clicking the "Ctrl + F" shortcut keys again as we can see in the following screenshot:
How to get full-screen on VirtualBox by command line in the terminal window?