Install VirtualBox Guest Additions So that SteamOS is actually usable as a virtualized OS (clipboard sharing, shared folders, better mouse pointer integration), you must now install VirtualBox's ...

The VirtualBox Guest Additions gives a performance boost and extra features to your hosts. Follow these steps to install this package on a GUI-less Ubuntu server guest.

Each Linux system will be slightly different, but the Tombuntu blog's instructions for installing VirtualBox Guest Additions in Ubuntu hold mostly true: head to where the ISO is mounted as a CD ...

If Seamless Mode option is grayed out or not working in VirtualBox, you need to install Guest Additions image and disable 3D Acceleration.

Sharing folders between a VirtualBox host and guest is actually much easier than you might think. Jack Wallen shows you how.