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<chapter id="installation">
  <title>Installation details</title>

  <para>As installation of VirtualBox varies depending on your host operating
  system, we provide installation instructions in four separate chapters for
  Windows, Mac OS X, Linux and Solaris, respectively.</para>

  <sect1 id="installation_windows">
    <title>Installing on Windows hosts</title>

    <sect2>
      <title>Prerequisites</title>

      <para>For the various versions of Windows that we support as host
      operating systems, please refer to <xref
      linkend="hostossupport" />.</para>

      <para>In addition, Windows Installer 1.1 or higher must be present on
      your system. This should be the case if you have all recent Windows
      updates installed.</para>
    </sect2>

    <sect2>
      <title>Performing the installation</title>

      <para>The VirtualBox installation can be started <itemizedlist>
          <listitem>
            <para>either by double-clicking on its executable file (contains
            both 32- and 64-bit architectures)</para>
          </listitem>

          <listitem>
            <para>or by entering <screen>VirtualBox.exe -extract</screen></para>

            <para>on the command line. This will extract both installers into
            a temporary directory in which you'll then find the usual .MSI
            files. Then you can do a <screen>msiexec /i VirtualBox-&lt;version&gt;-MultiArch_&lt;x86|amd64&gt;.msi</screen>
            to perform the installation.</para>
          </listitem>
        </itemizedlist></para>

      <para>In either case, this will display the installation welcome dialog
      and allow you to choose where to install VirtualBox to and which
      components to install. In addition to the VirtualBox application, the
      following components are available:<glosslist>
          <glossentry>
            <glossterm>USB support</glossterm>

            <glossdef>
              <para>This package contains special drivers for your Windows
              host that VirtualBox requires to fully support USB devices
              inside your virtual machines.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>Networking</glossterm>

            <glossdef>
              <para>This package contains extra networking drivers for your
              Windows host that VirtualBox needs to support Bridged Networking
              (to make your VM's virtual network cards accessible from other
              machines on your physical network).</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>Python Support</glossterm>

            <glossdef>
              <para>This package contains Python scripting support for the
              VirtualBox API (see <xref linkend="VirtualBoxAPI" />). For this
              to work, an already working Windows Python installation on the
              system is required.<footnote>
                  <para>See, for example, <ulink
                  url="http://www.python.org/download/windows/">http://www.python.org/download/windows/</ulink>.</para>
                </footnote></para>
            </glossdef>
          </glossentry>
        </glosslist></para>

      <para>Depending on your Windows configuration, you may see warnings
      about "unsigned drivers" or similar. Please select "Continue" on these
      warnings as otherwise VirtualBox might not function correctly after
      installation.</para>

      <para>The installer will create a "VirtualBox" group in the Windows
      "Start" menu which allows you to launch the application and access its
      documentation.</para>

      <para>With standard settings, VirtualBox will be installed for all users
      on the local system. In case this is not wanted, you have to invoke the
      installer by first extracting it by using <screen>VirtualBox.exe -extract</screen>
      and then do as follows: <screen>VirtualBox.exe -msiparams ALLUSERS=2</screen>
      or <screen>msiexec /i VirtualBox-&lt;version&gt;-MultiArch_&lt;x86|amd64&gt;.msi ALLUSERS=2</screen>
      on the extracted .MSI files. This will install VirtualBox only for the
      current user.</para>

      <para>If you do not want to install all features of VirtualBox, you can
      set the optional <computeroutput>ADDLOCAL</computeroutput> parameter to
      explicitly name the features to be installed. The following features are
      available: <glosslist>
          <glossentry>
            <glossterm>VBoxApplication</glossterm>

            <glossdef>
              <para>Main binaries of VirtualBox.<note>
                  <para>This feature must not be absent since it contains the
                  minimum set of files to have working VirtualBox
                  installation.</para>
                </note></para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBoxUSB</glossterm>

            <glossdef>
              <para>USB support.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBoxNetwork</glossterm>

            <glossdef>
              <para>All networking support; includes the VBoxNetworkFlt and
              VBoxNetworkAdp features (see below).</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBoxNetworkFlt</glossterm>

            <glossdef>
              <para>Bridged networking support.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBoxNetworkAdp</glossterm>

            <glossdef>
              <para>Host-only networking support.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBoxPython</glossterm>

            <glossdef>
              <para>Python support.</para>
            </glossdef>
          </glossentry>
        </glosslist>For example, to only install USB support along with the
      main binaries, do a: <screen>VirtualBox.exe -msiparams ADDLOCAL=VBoxApplication,VBoxUSB</screen>
      or <screen>msiexec /i VirtualBox-&lt;version&gt;-MultiArch_&lt;x86|amd64&gt;.msi ADDLOCAL=VBoxApplication,VBoxUSB</screen></para>

      <para>
      The user is able to choose between NDIS5 and NDIS6 host network filters drivers during
      the installation. This is realized via a command line parameter
      <computeroutput>NETWORKTYPE</computeroutput>.
      The NDIS6 driver is default for Windows Vista and later. For older Windows versions,
      the installer will automatically select the NDIS5 driver and this cannot be changed.
      For Windows Vista and later the user can force to install the (legacy) NDIS5 host
      network filter driver using <computeroutput>NETWORKTYPE=NDIS5</computeroutput>. For
      example, to install the NDIS5 driver on Windows 7, do
      <screen>VirtualBox.exe -msiparams NETWORKTYPE=NDIS5</screen>
      or
      <screen>msiexec /i VirtualBox-&lt;version&gt;-MultiArch_&lt;x86|amd64&gt;.msi NETWORKTYPE=NDIS5</screen>
      </para>


    </sect2>

    <sect2>
      <title>Uninstallation</title>

      <para>As VirtualBox uses the standard Microsoft Windows installer,
      VirtualBox can be safely uninstalled at any time by choosing the program
      entry in the "Add/Remove Programs" applet in the Windows Control
      Panel.</para>
    </sect2>

    <sect2>
      <title>Unattended installation</title>

      <para>Unattended installations can be performed using the standard MSI
      support.</para>

    </sect2>

    <sect2>
      <title>Public properties</title>

      <para>The following public properties can be specified via MSI API,
      <screen>VirtualBox.exe -msiparams NAME=VALUE [...]</screen>
      or
      <screen>msiexec /i VirtualBox-&lt;version&gt;-MultiArch_&lt;x86|amd64&gt;.msi NAME=VALUE [...]</screen>
      to control additional behavior and/or features of the Windows host installer:
        <glosslist>
          <glossentry>
            <glossterm>VBOX_INSTALLDESKTOPSHORTCUT</glossterm>

            <glossdef>
              <para>Specifies whether or not a VirtualBox icon on the desktop
              should be created.</para>

              <para>Set to <computeroutput>1</computeroutput> to enable,
              <computeroutput>0</computeroutput> to disable. Default is 1.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBOX_INSTALLQUICKLAUNCHSHORTCUT</glossterm>

            <glossdef>
              <para>Specifies whether or not a VirtualBox icon in the Quick Launch
              Bar should be created.</para>

              <para>Set to <computeroutput>1</computeroutput> to enable,
              <computeroutput>0</computeroutput> to disable. Default is 1.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBOX_REGISTERFILEEXTENSIONS</glossterm>

            <glossdef>
              <para>Specifies whether or not the file extensions .vbox,
              .vbox-extpack, .ovf, .ova, .vdi, .vmdk, .vhd and .vdd should be
              associated with VirtualBox. Files of these types then will be opened
              with VirtualBox.</para>

              <para>Set to <computeroutput>1</computeroutput> to enable,
              <computeroutput>0</computeroutput> to disable. Default is 1.</para>
            </glossdef>
          </glossentry>

          <glossentry>
            <glossterm>VBOX_START</glossterm>

            <glossdef>
              <para>Specifies whether or not VirtualBox should be started right after
              successful installation.</para>

              <para>Set to <computeroutput>1</computeroutput> to enable,
              <computeroutput>0</computeroutput> to disable. Default is 1.</para>
            </glossdef>
          </glossentry>
        </glosslist>
      </para>

    </sect2>
  </sect1>

  <sect1>
    <title>Installing on Mac OS X hosts</title>

    <sect2>
      <title>Performing the installation</title>

      <para>For Mac OS X hosts, VirtualBox ships in a disk image
      (<computeroutput>dmg</computeroutput>) file. Perform the following
      steps: <orderedlist>
          <listitem>
            <para>Double-click on that file to have its contents
            mounted.</para>
          </listitem>

          <listitem>
            <para>A window will open telling you to double click on the
            <computeroutput>VirtualBox.mpkg</computeroutput> installer file
            displayed in that window.</para>
          </listitem>

          <listitem>
            <para>This will start the installer, which will allow you to
            select where to install VirtualBox to.</para>
          </listitem>
        </orderedlist></para>

      <para>After installation, you can find a VirtualBox icon in the
      "Applications" folder in the Finder.</para>
    </sect2>

    <sect2>
      <title>Uninstallation</title>

      <para>To uninstall VirtualBox, open the disk image (dmg) file again and
      double-click on the uninstall icon contained therein.</para>
    </sect2>

    <sect2>
      <title>Unattended installation</title>

      <para>To perform a non-interactive installation of VirtualBox you can
      use the command line version of the installer application.</para>

      <para>Mount the disk image (dmg) file as described in the normal
      installation or use the following command line:</para>

      <screen>hdiutil attach /path/to/VirtualBox-xyz.dmg</screen>

      <para>Then open a terminal session and execute:</para>

      <screen>sudo installer -pkg /Volumes/VirtualBox/VirtualBox.pkg -target /Volumes/Macintosh\ HD</screen>
    </sect2>
  </sect1>

  <sect1 id="install-linux-host">
    <title>Installing on Linux hosts</title>

    <sect2>
      <title>Prerequisites</title>

      <para>For the various versions of Linux that we support as host
      operating systems, please refer to <xref
      linkend="hostossupport" />.</para>

      <para>You will need to install the following packages on your Linux
      system before starting the installation (some systems will do this for
      you automatically when you install VirtualBox):</para>

      <itemizedlist>
        <listitem>
          <para>Qt 4.8.0 or higher;</para>
        </listitem>

        <listitem>
          <para>SDL 1.2.7 or higher (this graphics library is typically called
          <computeroutput>libsdl</computeroutput> or similar).</para>
        </listitem>
      </itemizedlist>

      <note>
        <para>To be precise, these packages are only required if you want to
        run the VirtualBox graphical user interfaces. In particular,
        <computeroutput>VirtualBox</computeroutput>, the graphical VirtualBox
        manager, requires both Qt and SDL;
        <computeroutput>VBoxSDL</computeroutput>, our simplified GUI, requires
        only SDL. By contrast, if you only want to run
        <computeroutput>VBoxHeadless</computeroutput>, neither Qt nor SDL are
        required.</para>
      </note>
    </sect2>

    <sect2 id="externalkernelmodules">
      <title>The VirtualBox kernel module</title>

      <para>VirtualBox uses a special kernel module called
      <computeroutput>vboxdrv</computeroutput> to perform physical memory
      allocation and to gain control of the processor for guest system
      execution. Without this kernel module, you can still use the VirtualBox
      manager to configure virtual machines, but they will not start. In
      addition, there are the network kernel modules
      <computeroutput>vboxnetflt</computeroutput> and
      <computeroutput>vboxnetadp</computeroutput> which are required for the
      more advanced networking features of VirtualBox.</para>

      <para>The VirtualBox kernel module is automatically installed on your
      system when you install VirtualBox. To maintain it with future kernel
      updates, for those Linux distributions which provide it -- most current
      ones -- we recommend installing Dynamic Kernel Module Support
      (DKMS)<footnote>
          <para>See <ulink
          url="http://en.wikipedia.org/wiki/Dynamic_Kernel_Module_Support">http://en.wikipedia.org/wiki/Dynamic_Kernel_Module_Support</ulink>
          for an introduction.</para>
        </footnote>. This framework helps with building and upgrading kernel
      modules.</para>

      <para>If DKMS is not already installed, execute one of the following:
      <itemizedlist>
          <listitem>
            <para>On an Ubuntu system:</para>

            <screen>sudo apt-get install dkms</screen>
          </listitem>

          <listitem>
            <para>On a Fedora system:<screen>yum install dkms</screen></para>
          </listitem>

          <listitem>
            <para>On a Mandriva or Mageia system:<screen>urpmi dkms</screen></para>
          </listitem>
        </itemizedlist></para>

      <para>If DKMS is available and installed, the VirtualBox kernel module
      should always work automatically, and it will be automatically rebuilt
      if your host kernel is updated.</para>

      <para>Otherwise, there are only two situations in which you will need to
      worry about the kernel module:<orderedlist>
          <listitem>
            <para>The original installation fails. This probably means that
            your Linux system is not prepared for building external kernel
            modules.</para>

            <para>Most Linux distributions can be set up simply by installing
            the right packages - normally, these will be the GNU compiler
            (GCC), GNU Make (make) and packages containing header files for
            your kernel - and making sure that all system updates are
            installed and that the system is running the most up-to-date
            kernel included in the distribution. <emphasis>The version numbers
            of the header file packages must be the same as that of the kernel
            you are using.</emphasis></para>

            <itemizedlist>
              <listitem>
                <para>With Debian and Ubuntu releases, you must install the
                right version of the
                <computeroutput>linux-headers</computeroutput> and if it
                exists the <computeroutput>linux-kbuild</computeroutput>
                package. Current Ubuntu releases should have the right
                packages installed by default.</para>
              </listitem>

              <listitem>
                <para>In even older Debian and Ubuntu releases, you must
                install the right version of the
                <computeroutput>kernel-headers</computeroutput>
                package.</para>
              </listitem>

              <listitem>
                <para>On Fedora and Redhat systems, the package is
                <computeroutput>kernel-devel</computeroutput>.</para>
              </listitem>

              <listitem>
                <para>On SUSE and openSUSE Linux, you must install the right
                versions of the <computeroutput>kernel-source</computeroutput>
                and <computeroutput>kernel-syms</computeroutput>
                packages.</para>
              </listitem>

              <listitem>
                <para>If you have built your own kernel, you will need to make
                sure that you also installed all the required header and other
                files for building external modules to the right locations.
                The details of how to do this will depend on how you built
                your kernel, and if you are unsure you should consult the
                documentation which you followed to do so.</para>
              </listitem>
            </itemizedlist>
          </listitem>

          <listitem>
            <para>The kernel of your Linux host was updated and DKMS is not
            installed. In that case, the kernel module will need to be
            reinstalled by executing (as root):</para>

            <screen>rcvboxdrv setup</screen>
          </listitem>
        </orderedlist></para>
    </sect2>

    <sect2>
      <title>Performing the installation</title>

      <para>VirtualBox is available in a number of package formats native to
      various common Linux distributions (see <xref linkend="hostossupport" />
      for details). In addition, there is an alternative generic installer
      (.run) which should work on most Linux distributions.</para>

      <sect3>
        <title>Installing VirtualBox from a Debian/Ubuntu package</title>

        <para>First, download the appropriate package for your distribution.
        The following examples assume that you are installing to a 32-bit
        Ubuntu Wily system. Use <computeroutput>dpkg</computeroutput> to
        install the Debian package:</para>

        <screen>sudo dpkg -i virtualbox-5.0_@VBOX_VERSION_STRING@_Ubuntu_wily_i386.deb</screen>

        <para>The installer will also try to build kernel modules suitable for
        the current running kernel. If the build process is not successful you
        will be shown a
        warning and the package will be left unconfigured. Please have a look
        at <computeroutput>/var/log/vbox-install.log</computeroutput> to find
        out why the compilation failed. You may have to install the
        appropriate Linux kernel headers (see <xref
        linkend="externalkernelmodules" />). After correcting any problems, do
        <screen>sudo rcvboxdrv setup</screen>This will start a
        second attempt to build the module.</para>

        <para>If a suitable kernel module was found in the package or the
        module was successfully built, the installation script will attempt to
        load that module. If this fails, please see <xref
        linkend="ts_linux-kernelmodule-fails-to-load" /> for further
        information.</para>

        <para>Once VirtualBox has been successfully installed and configured,
        you can start it by selecting "VirtualBox" in your start menu or from
        the command line (see <xref linkend="startingvboxonlinux" />).</para>
      </sect3>

      <sect3>
        <title>Using the alternative installer (VirtualBox.run)</title>

        <para>The alternative installer performs the following steps:</para>

        <itemizedlist>
          <listitem>
            <para>It unpacks the application files to the target directory,
            <screen>/opt/VirtualBox/</screen> which cannot be changed.</para>
          </listitem>

          <listitem>
            <para>It builds the VirtualBox kernel modules
            (<computeroutput>vboxdrv</computeroutput>,
            <computeroutput>vboxnetflt</computeroutput> and
            <computeroutput>vboxnetadp</computeroutput>) and installs
            them.</para>
          </listitem>

          <listitem>
            <para>It creates
            <computeroutput>/sbin/rcvboxdrv</computeroutput>, an init
            script to start the VirtualBox kernel module.</para>
          </listitem>

          <listitem>
            <para>It creates a new system group called
            <computeroutput>vboxusers</computeroutput>.</para>
          </listitem>

          <listitem>
            <para>It creates symbolic links in
            <computeroutput>/usr/bin</computeroutput> to the a shell script
            (<computeroutput>/opt/VirtualBox/VBox</computeroutput>) which does
            some sanity checks and dispatches to the actual executables,
            <computeroutput>VirtualBox</computeroutput>,
            <computeroutput>VBoxSDL</computeroutput>,
            <computeroutput>VBoxVRDP</computeroutput>,
            <computeroutput>VBoxHeadless</computeroutput> and
            <computeroutput>VBoxManage</computeroutput></para>
          </listitem>

          <listitem>
            <para>It creates
            <computeroutput>/etc/udev/rules.d/60-vboxdrv.rules</computeroutput>,
            a description file for udev, if that is present, which makes the
            USB devices accessible to all users in the
            <computeroutput>vboxusers</computeroutput> group.</para>
          </listitem>

          <listitem>
            <para>It writes the installation directory to
            <computeroutput>/etc/vbox/vbox.cfg</computeroutput>.</para>
          </listitem>
        </itemizedlist>

        <para>The installer must be executed as root with either
        <computeroutput>install</computeroutput> or
        <computeroutput>uninstall</computeroutput> as the first
        parameter.</para>

        <screen>sudo ./VirtualBox.run install</screen>

        <para>Or if you do not have the "sudo" command available, run the
        following as root instead:<screen>./VirtualBox.run install</screen></para>

        <para>After that you need to put every user which should be able to
        access USB devices from VirtualBox guests in the group
        <computeroutput>vboxusers</computeroutput>, either through the GUI
        user management tools or by running the following command as
        root:</para>

        <screen>sudo usermod -a -G vboxusers username</screen>

        <para><note>
            <para>The <computeroutput>usermod</computeroutput> command of some
            older Linux distributions does not support the
            <computeroutput>-a</computeroutput> option (which adds the user to
            the given group without affecting membership of other groups). In
            this case, find out the current group memberships with the
            <computeroutput>groups</computeroutput> command and add all these
            groups in a comma-separated list to the command line after the
            <computeroutput>-G</computeroutput> option, e.g. like this:
            <computeroutput>usermod -G group1,group2,vboxusers
            username</computeroutput>.</para>
          </note></para>
      </sect3>

      <sect3>
        <title>Performing a manual installation</title>

        <para>If, for any reason, you cannot use the shell script installer
        described previously, you can also perform a manual installation.
        Invoke the installer like this:</para>

        <screen>./VirtualBox.run --keep --noexec</screen>

        <para>This will unpack all the files needed for installation in the
        directory <computeroutput>install</computeroutput> under the current
        directory. The VirtualBox application files are contained in
        <computeroutput>VirtualBox.tar.bz2</computeroutput> which you can
        unpack to any directory on your system. For example:</para>

        <screen>sudo mkdir /opt/VirtualBox
sudo tar jxf ./install/VirtualBox.tar.bz2 -C /opt/VirtualBox</screen>

        <para>or as root:<screen>mkdir /opt/VirtualBox
tar jxf ./install/VirtualBox.tar.bz2 -C /opt/VirtualBox</screen></para>

        <para>The sources for VirtualBox's kernel module are provided in the
        <computeroutput>src</computeroutput> directory. To build the module,
        change to the directory and issue</para>

        <screen>make</screen>

        <para>If everything builds correctly, issue the following command to
        install the module to the appropriate module directory:</para>

        <screen>sudo make install</screen>

        <para>In case you do not have sudo, switch the user account to root
        and perform<screen>make install</screen></para>

        <para>The VirtualBox kernel module needs a device node to operate. The
        above make command will tell you how to create the device node,
        depending on your Linux system. The procedure is slightly different
        for a classical Linux setup with a
        <computeroutput>/dev</computeroutput> directory, a system with the now
        deprecated <computeroutput>devfs</computeroutput> and a modern Linux
        system with <computeroutput>udev</computeroutput>.</para>

        <para>On certain Linux distributions, you might experience
        difficulties building the module. You will have to analyze the error
        messages from the build system to diagnose the cause of the problems.
        In general, make sure that the correct Linux kernel sources are used
        for the build process.</para>

        <para>Note that the <computeroutput>/dev/vboxdrv</computeroutput>
        kernel module device node must be owned by root:root and must be
        read/writable only for the user.</para>

        <para>Next, you will have to install the system initialization script
        for the kernel module:<screen>cp /opt/VirtualBox/vboxdrv.sh /sbin/rcvboxdrv</screen>(assuming
        you installed VirtualBox to the
        <computeroutput>/opt/VirtualBox</computeroutput> directory) and
        activate the initialization script using the right method for your
        distribution. You should create VirtualBox's configuration
        file:<screen>mkdir /etc/vbox
echo INSTALL_DIR=/opt/VirtualBox &gt; /etc/vbox/vbox.cfg</screen>and, for
        convenience, create the following symbolic links:</para>

        <screen>ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VirtualBox
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxManage
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxHeadless
ln -sf /opt/VirtualBox/VBox.sh /usr/bin/VBoxSDL</screen>
      </sect3>

      <sect3>
        <title>Updating and uninstalling VirtualBox</title>

        <para>Before updating or uninstalling VirtualBox, you must terminate
        any virtual machines which are currently running and exit the
        VirtualBox or VBoxSVC applications. To update VirtualBox, simply run
        the installer of the updated version. To uninstall VirtualBox, invoke
        the installer like this: <screen>sudo ./VirtualBox.run uninstall</screen>
        or as root<screen>./VirtualBox.run uninstall</screen>. Starting with
        version 2.2.2, you can uninstall the .run package by invoking <screen>/opt/VirtualBox/uninstall.sh</screen>To
        manually uninstall VirtualBox, simply undo the steps in the manual
        installation in reverse order.</para>
      </sect3>

      <sect3>
        <title>Automatic installation of Debian packages</title>

        <para>The Debian packages will request some user feedback when
        installed for the first time. The debconf system is used to perform
        this task. To prevent any user interaction during installation,
        default values can be defined. A file
        <computeroutput>vboxconf</computeroutput> can contain the following
        debconf settings: <screen>virtualbox virtualbox/module-compilation-allowed boolean true
virtualbox virtualbox/delete-old-modules boolean true</screen>The first line
        allows compilation of the vboxdrv kernel module if no module was found
        for the current kernel. The second line allows the package to delete
        any old vboxdrv kernel modules compiled by previous
        installations.</para>

        <para>These default settings can be applied with <screen>debconf-set-selections vboxconf</screen>
        prior to the installation of the VirtualBox Debian package.</para>

        <para>In addition there are some common configuration options that can
        be set prior to the installation, described in <xref
        linkend="linux_install_opts" />.</para>
      </sect3>

      <sect3>
        <title>Automatic installation of .rpm packages</title>

        <para>The .rpm format does not provide a configuration system
        comparable to the debconf system. See <xref
        linkend="linux_install_opts" /> for how to set some common
        installation options provided by VirtualBox.</para>
      </sect3>

      <sect3 id="linux_install_opts">
        <title>Automatic installation options</title>

        <para>To configure the installation process of our .deb and .rpm
        packages, you can create a response file named
        <computeroutput>/etc/default/virtualbox</computeroutput>. The
        automatic generation of the udev rule can be prevented by the
        following setting: <screen>INSTALL_NO_UDEV=1</screen> The creation of
        the group vboxusers can be prevented by <screen>INSTALL_NO_GROUP=1</screen>
        If the line <screen>INSTALL_NO_VBOXDRV=1</screen> is specified, the
        package installer will not try to build the
        <computeroutput>vboxdrv</computeroutput> kernel module if no module
        fitting the current kernel was found.</para>
      </sect3>
    </sect2>

    <sect2>
      <title>The vboxusers group</title>

      <para>The Linux installers create the system user group
      <computeroutput>vboxusers</computeroutput> during installation. Any
      system user who is going to use USB devices from VirtualBox guests must
      be a member of that group. A user can be made a member of the group
      <computeroutput>vboxusers</computeroutput> through the GUI user/group
      management or at the command line with</para>

      <screen>sudo usermod -a -G vboxusers username</screen>
    </sect2>

    <sect2 id="startingvboxonlinux">
      <title>Starting VirtualBox on Linux</title>

      <para>The easiest way to start a VirtualBox program is by running the
      program of your choice (<computeroutput>VirtualBox</computeroutput>,
      <computeroutput>VBoxManage</computeroutput>,
      <computeroutput>VBoxSDL</computeroutput> or
      <computeroutput>VBoxHeadless</computeroutput>) from a terminal. These
      are symbolic links to <computeroutput>VBox.sh</computeroutput> that
      start the required program for you.</para>

      <para>The following detailed instructions should only be of interest if
      you wish to execute VirtualBox without installing it first. You should
      start by compiling the <computeroutput>vboxdrv</computeroutput> kernel
      module (see above) and inserting it into the Linux kernel. VirtualBox
      consists of a service daemon (<computeroutput>VBoxSVC</computeroutput>)
      and several application programs. The daemon is automatically started if
      necessary. All VirtualBox applications will communicate with the daemon
      through Unix local domain sockets. There can be multiple daemon
      instances under different user accounts and applications can only
      communicate with the daemon running under the user account as the
      application. The local domain socket resides in a subdirectory of your
      system's directory for temporary files called
      <computeroutput>.vbox-&lt;username&gt;-ipc</computeroutput>. In case of
      communication problems or server startup problems, you may try to remove
      this directory.</para>

      <para>All VirtualBox applications
      (<computeroutput>VirtualBox</computeroutput>,
      <computeroutput>VBoxSDL</computeroutput>,
      <computeroutput>VBoxManage</computeroutput> and
      <computeroutput>VBoxHeadless</computeroutput>) require the VirtualBox
      directory to be in the library path:</para>

      <screen>LD_LIBRARY_PATH=. ./VBoxManage showvminfo "Windows XP"</screen>
    </sect2>
  </sect1>

  <sect1 id="install-solaris-host">
    <title>Installing on Solaris hosts</title>

    <para>For the specific versions of Solaris that we support as host
    operating systems, please refer to <xref
    linkend="hostossupport" />.</para>

    <para>If you have a previously installed instance of VirtualBox on your
    Solaris host, please uninstall it first before installing a new instance.
    Refer to <xref linkend="uninstall-solaris-host" /> for uninstall
    instructions.</para>

    <sect2>
      <title>Performing the installation</title>

      <para>VirtualBox is available as a standard Solaris package. Download
      the VirtualBox SunOS package which includes the 64-bit
      versions of VirtualBox. <emphasis>The installation must be performed as
      root and from the global zone</emphasis> as the VirtualBox installer
      loads kernel drivers which cannot be done from non-global zones. To
      verify which zone you are currently in, execute the
      <computeroutput>zonename</computeroutput> command. Execute the following
      commands:</para>

      <screen>gunzip -cd VirtualBox-@VBOX_VERSION_STRING@-SunOS.tar.gz | tar xvf -</screen>

      <para>Starting with VirtualBox 3.1 the VirtualBox kernel package is no
      longer a separate package and has been integrated into the main package.
      Install the VirtualBox package using:</para>

      <screen>pkgadd -d VirtualBox-@VBOX_VERSION_STRING@-SunOS.pkg</screen>

      <note>
        <para>If you are using Solaris Zones, to install VirtualBox only into
        the current zone and not into any other zone, use
        <computeroutput>pkgadd -G</computeroutput>. For more information refer
        to the <computeroutput>pkgadd</computeroutput> manual; see also <xref
        linkend="solaris-zones" />.</para>
      </note>

      <para>The installer will then prompt you to enter the package you wish
      to install. Choose "1" or "all" and proceed. Next the installer will ask
      you if you want to allow the postinstall script to be executed. Choose
      "y" and proceed as it is essential to execute this script which installs
      the VirtualBox kernel module. Following this confirmation the installer
      will install VirtualBox and execute the postinstall setup script.</para>

      <para>Once the postinstall script has been executed your installation is
      now complete. You may now safely delete the uncompressed package and
      <computeroutput>autoresponse</computeroutput> files from your system.
      VirtualBox would be installed in
      <computeroutput>/opt/VirtualBox</computeroutput>.</para>
    </sect2>

    <sect2>
      <title>The vboxuser group</title>

      <para>Starting with VirtualBox 4.1, the installer creates the system
      user group <computeroutput>vboxuser</computeroutput> during installation
      for Solaris hosts that support the USB features required by VirtualBox.
      Any system user who is going to use USB devices from VirtualBox guests
      must be a member of this group. A user can be made a member of this
      group through the GUI user/group management or at the command line by
      executing as root:</para>

      <screen>usermod -G vboxuser username</screen>

      <para>Note that adding an active user to that group will require that
      user to log out and back in again. This should be done manually after
      successful installation of the package.</para>
    </sect2>

    <sect2>
      <title>Starting VirtualBox on Solaris</title>

      <para>The easiest way to start a VirtualBox program is by running the
      program of your choice (<computeroutput>VirtualBox</computeroutput>,
      <computeroutput>VBoxManage</computeroutput>,
      <computeroutput>VBoxSDL</computeroutput> or
      <computeroutput>VBoxHeadless</computeroutput>) from a terminal. These
      are symbolic links to <computeroutput>VBox.sh</computeroutput> that
      start the required program for you.</para>

      <para>Alternatively, you can directly invoke the required programs from
      <computeroutput>/opt/VirtualBox</computeroutput>. Using the links
      provided is easier as you do not have to type the full path.</para>

      <para>You can configure some elements of the
      <computeroutput>VirtualBox</computeroutput> Qt GUI such as fonts and
      colours by executing <computeroutput>VBoxQtconfig</computeroutput> from
      the terminal.</para>
    </sect2>

    <sect2 id="uninstall-solaris-host">
      <title>Uninstallation</title>

      <para>Uninstallation of VirtualBox on Solaris requires root permissions.
      To perform the uninstallation, start a root terminal session and
      execute:</para>

      <screen>pkgrm SUNWvbox</screen>

      <para>After confirmation, this will remove VirtualBox from your
      system.</para>

      <para>If you are uninstalling VirtualBox version 3.0 or lower, you need
      to remove the VirtualBox kernel interface package, execute:</para>

      <para><screen>pkgrm SUNWvboxkern</screen></para>
    </sect2>

    <sect2>
      <title>Unattended installation</title>

      <para>To perform a non-interactive installation of VirtualBox we have
      provided a response file named
      <computeroutput>autoresponse</computeroutput> that the installer will
      use for responses to inputs rather than ask them from you.</para>

      <para>Extract the tar.gz package as described in the normal
      installation. Then open a root terminal session and execute:</para>

      <screen>pkgadd -d VirtualBox-@VBOX_VERSION_STRING@-SunOS-x86 -n -a autoresponse SUNWvbox</screen>

      <para>To perform a non-interactive uninstallation, open a root terminal
      session and execute:</para>

      <screen>pkgrm -n -a /opt/VirtualBox/autoresponse SUNWvbox</screen>
    </sect2>

    <sect2 id="solaris-zones">
      <title>Configuring a zone for running VirtualBox</title>

      <para>Assuming that VirtualBox has already been installed into your
      zone, you need to give the zone access to VirtualBox's device node. This
      is done by performing the following steps. Start a root terminal and
      execute:</para>

      <screen>zonecfg -z vboxzone</screen>

      <para>Replace "vboxzone" with the name of the zone in which you intend
      to run VirtualBox.</para>

      <para>Inside the <computeroutput>zonecfg</computeroutput> prompt add the
      <computeroutput>device</computeroutput> resource and
      <computeroutput>match</computeroutput> properties to the zone. Here's
      how it can be done:</para>

      <screen>zonecfg:vboxzone&gt;add device
zonecfg:vboxzone:device&gt;set match=/dev/vboxdrv
zonecfg:vboxzone:device&gt;end
zonecfg:vboxzone&gt;add device
zonecfg:vboxzone:device&gt;set match=/dev/vboxdrvu
zonecfg:vboxzone:device&gt;end
zonecfg:vboxzone&gt;exit</screen>

      <para>If you are running VirtualBox 2.2.0 or above on Solaris 11 or 
      above, you may add a device for <computeroutput>/dev/vboxusbmon</computeroutput>
      too, similar to what was shown above. This does not apply to Solaris 10
      hosts due to lack of USB support.</para>
      
      <para>Next reboot the zone using <computeroutput>zoneadm</computeroutput>
      and you should be able to run VirtualBox from within the configured zone.</para>
    </sect2>
  </sect1>
</chapter>
