

If you installed VirtualBox the standard way, then you have an empty virtual optical drive. Sudo apt install build-essential dkms linux-headers-$(uname -r) Then install some packages that are necessary for installing guest additions. You need to update your apt package list and upgrade all the software installed on your machine: sudo apt update Open a terminal either graphically or by pressing t while holding both Ctrl and Alt keys. Install VirtualBox Guest Additions Using the GUI Install VirtualBox Guest Additions Using the Command-Line.

Install VirtualBox Guest Additions Using the GUI.
