4 Guest Additions 4.2.1.2 Updating the Windows Guest Additions Windows Guest Additions can be updated by running the installation program again, as previ- ously described. This will then replace the previous Additions drivers with updated versions. Alternatively, you may also open the Windows Device Manager and select “Update driver...“ for two devices: 1. the VirtualBox Graphics Adapter and 2. the VirtualBox System Device. For each, choose to provide your own driver and use “Have Disk” to point the wizard to the CD-ROM drive with the Guest Additions. 4.2.1.3 Unattended Installation In order to allow for completely unattended guest installations, you can specify a command line parameter to the install launcher: VBoxWindowsAdditions.exe /S This automatically installs the right files and drivers for the corresponding platform (32- or 64-bit). Note: Because of the drivers are not yet WHQL certified, you still might get some driver installation popups, depending on the Windows guest version. For more options regarding unattended guest installations, consult the command line help by using the command: VBoxWindowsAdditions.exe /? 4.2.1.4 Manual file extraction If you would like to install the files and drivers manually, you can extract the files from the Windows Guest Additions setup by typing: VBoxWindowsAdditions.exe /extract To explicitly extract the Windows Guest Additions for another platform than the current run- ning one (e.g. 64-bit files on a 32-bit system), you have to execute the appropriate platform installer (VBoxWindowsAdditions-x86.exe or VBoxWindowsAdditions-amd64.exe) with the /extract parameter. 4.2.1.5 Windows Vista networking If, for some reason, you want to use an AMD PCNet card with Microsoft Windows Vista or later instead of the Intel E1000 card that VirtualBox provides by default, you will need to install a driver for that manually (see chapter 6.1, Virtual networking hardware, page 83). As a convenience, VirtualBox ships with a 32-bit driver for the AMD PCNet card, which comes with the Windows Guest Additions. If you install these in a 32-bit Vista guest, the driver will automatically be installed as well. If, for some reason, you would like to install the driver man- ually, you can extract the required files from the Windows Guest Additions setup. Please consult chapter 4.2.1.4, Manual file extraction, page 56 on how to achieve this. You will then find the AMD PCNet driver files in the x86\Network\AMD\netamd.inf subdirectory of the default install directory. Unfortunately, there is no 64-bit driver available for the AMD PCNet card. 56