Changes

== Configuring a CD/DVD Drive == Before the guest operating system can be installed, it is likely that a CD/DVD drive or Network PXE boot will need to be configured into the virtual machine. Details on these and other settings relating to VirtualBox virtual machines are covered in the next chapter - [[Configuring VirtualBox Virtual Machine Settings]]. A CD/DVD drive is configured by selecting the virtual machine from the list and selecting ''Settings'' from the toolbar. In the Settings dialog, click on the ''CD/DVD-ROM'' entry in the list as follows:  [[Image:virtualbox_cd_dvd_rom_settings.jpg|The VirtualBox CD/DVD-ROM settings page]]  If a CD or DVD device is to be made available to the guest operating system, the ''Mount CD/DVD Drive'' option must first be selected. Once selected, the remaining options on the screen are enabled. The CD/DVD device presented to the virtual machine may be in the form of a physical device connected to the host, or an ISO image file visible to the host operating system. In the case of an ISO image, the file must be added to the media library using the ''Virtual Media Manager'' before it can be attached to a virtual machine. To access the Virtual Media Manager, click on the button located to the right of the ISO image file menu. When using a physical device connected to the host, the option is also available to ''Enable Passthrough''. This option allows the guest operating system to send ATAPI commands directly to the physical device so that CD/DVD writers can be used from within the virtual machine.