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To install the build-essential package, open a terminal by typing Ctrl + Alt + t. VirtualBox Guest Additions requires the build-essential package to be first installed in Ubuntu. Step-by-step instructions to install VirtualBox Guest Additions in Ubuntu 20.04 LTS Desktop Installation of build-essential package To install VirtualBox Guest Additions in Ubuntu follow the guide below. To know more about Guest Additions, you can read VirtualBox’s documentation. Generic host / guest communication channel – able to control and monitor guest execution.Automated logins – able to do username and password passing from Host Machine to Virtual Machine.Time synchronization – better time synchronization with the host machine.Seamless windows – able to make Virtual Machine application windows to appear side-by-side with Host Machine application windows like it was part of the Host Machine.Virtual Machine screen will resize automatically to the size of the VirtualBox window. Better video support – able to support higher resolution screens such as Full HD.Shared folders – able to share files via a shared folder from Host computer to Virtual Machine and vice versa.Shared clipboards – able to do copy & paste from Host computer to Virtual Machine and vice versa.
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Once we install the VirtualBox Guest Additions we will have access to the following features in Ubuntu 20.04 LTS Focal Fossa. Screen resolution without VirtualBox Guest Additions
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