If it does not mount by itself, then you can manually mount it. The shall contain your username on the system. The location should be something similar to this /media//VBOXADDITIONS_4.3.10_93012 Kubuntu would give you a device notification on bottom right and you can click 'open with file manager' which will mount the cd and open it up in dolphin.Ĭheck the path of the cd file system inside the file manager (press Ctrl + L). Click it to open the VBox guest additions cd in file manager. On Ubuntu unity, you should see the cd icon on the left panel towards the lower side.

On Xubuntu the cd should get mounted automatically inside the /media directory. This will insert the guest additions cd image into the guest OS. Now click 'Devices > Insert guest additions CD image' in the virtualbox window. $ sudo apt-get install build-essential module-assistant

Virtualbox guest additions are compiled for the target system, so it needs the necessary kernel headers and related programs.

The same method works for similar distros like Xubuntu, Kubuntu and Lubuntu.

This tutorial shows you how to install VirtualBox guest additions in Ubuntu.

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