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 ...

Installing Guest Additions is super easy. Boot into your virtual machine, then head to Devices > Insert Guest Additions CD Image.

Sign back into Windows 11, then install the Guest Additions for Oracle VM VirtualBox to enhance its performance. To do this, click the Devices menu and select Insert Guest Additions CD Image.

Now you need to tell VirtualBox what kind of OS you’re running. The program adjusts a number of settings when you specify an OS, but this is most important for installing Guest Additions, which ...

Always install Guest Additions. Guest Additions are special software for Windows, Linux, and Solaris operating systems that make your life as a virtual OS user much easier.