Changes

Whilst the ISO image file may be manually added to the VirtualBox virtual media library and mounted on a virtual machine as a virtual CD/DVD device, a quicker mechanism is provided via the ''Devices...'' menu of the virtual machine window.

As previously discussed, the VirtualBox Guest Additions reside in an ISO image file which is bundled with the VirtalBox VirtualBox software. This image file must be mounted as a virtual CD-ROM on the virtual machine on which the additions are to be installed. VirtualBox provides a shortcut to performing this task in the form of the ''Devices->Install Guest Additions....'' menu option. When selected, this option mounts the ''VBoxGuestAdditions.iso'' as a virtual CD-ROM and, assuming that AutoPlay is enabled on the guest Windows operating system, the VirtualBox Guest Additions installer will automatically start. If AutoPlay is not enabled, navigate to the CD-ROM using Windows Explorer and double click on ''VBoxWindowsAdditions.exe'' to initiate the installation process. Once invoked, the ''Sun xVM VirtualBox Guest Additions Setup Welcome'' screen will appear. Click ''Next >'' to proceed to the license screescreen, review the license and click ''I Agree'' to display the installation screen as illustrated below:

Either accept the default installation folder or browse to the desired location before clicking the ''Install'' button to initiate the installation process. The progress of the installation is communicate via a progress bar and a scrolling report of the various tasks as they are performed:

Alternatively, the installation script for the appropriate guest virtual machine architecture may be run manually by changing directory to the CD-ROM mount point and executing one of the following commands, either as super user or by prefixing the command with the ''sudo'':