Update virtual box guide

Signed-off-by: Tino Lippold <Tino.Lippold@de.bosch.com>

content/guides/virtualbox.md

@@ -95,9 +95,11 @@ For instructions on uninstalling VirtualBox, are also provided in the [user manu
 
 # VirtualBox Setup
 
-VirtualBox can be configured both from its GUI or via the command line.
+VirtualBox can be configured as follows:
+- option A: from its GUI
+- option B: via the command line
 
-## From the VirtualBox GUI
+## Option A: From the VirtualBox GUI
 
 - If you have not already downloaded an Apertis SDK image, the
   [images]({{< ref "images.md" >}}) page contains information regarding the
@@ -114,7 +116,9 @@ VirtualBox can be configured both from its GUI or via the command line.
 - Go to `Machine` ▸ `New` or click the **New** Icon. This launches the **Create
   New Virtual Machine** screen.
 
-- Enter a name and select the following from the menus:
+- Enter a name and select type and version from the menus:
+  - Name: recommendation is to use the format  
+    `Apertis $RELEASE.$REVISION SDK` e.g. `Apertis v2020.0 SDK`
   - Type: `Linux`
   - Version: `Debian (64 bit)`
 
@@ -164,7 +168,7 @@ might crash).
  If you would like additional information about creating a new virtual machine you can find it in the [VirtualBox manual](https://www.virtualbox.org/manual/ch01.html#gui-createvm)
 {{% /notice %}}
 
-## From the Command Line
+## Option B: From the Command Line
 
 - Run the following commands:
 
@@ -232,6 +236,9 @@ enable full screen rendering within VirtualBox SDK images.  Full screen is not
 the only reason to install guest additions, though. Shared folders are another
 very handy feature.
 
+Before starting installation of the Guest Additions it might be helpful to adapt the
+[keyboard layout]( {{< ref "sdk-usage.md#change-the-keyboard-layout" >}} ).
+
 ## Installation
 
 {{% notice info %}}
@@ -296,6 +303,30 @@ E.g:
 
 This command will mount the share folder to the current `/mnt`.
 
+Beside the manual mounting of the shared folder it is possible to enable the automatic mounting.
+Please set a tick mark for the `Auto-mount` option and provide a mount path e.g. `/mnt/vmshare`.
+In order to access the mount path with user access rights you have to call
+
+    $ sudo usermod -a -G vboxsf "$USER"
+
+and reboot your virtual machine afterwards. See also the [VirtualBox manual](http://www.virtualbox.org/manual/ch04.html).
+
+## Setting up shared clipboard
+
+Via the shared clipboard functionality the clipboard of the guest OS can be shared with that of your host.
+Enter the **Shared Clipboard** menu item by opening the **Devices** menu of the virtual machine.
+Then select the mode according your needs, recommendation is **Bidirectional** because this will always make
+sure that both clipboards contain the same data. Further information can be found in the
+[VirtualBox manual](http://www.virtualbox.org/manual/ch03.html).
+
+## Setting up drag and drop
+
+Oracle VM VirtualBox enables you to drag and drop content from the host to the guest, and vice versa.
+Enter the **Drag and Drop** menu item by opening the **Devices** menu of the virtual machine.
+Then select the mode according your needs, recommendation is **Bidirectional** because this enables drag and drop
+operations in both directions. Further information e.g. known limitations can be found in the
+[VirtualBox manual](http://www.virtualbox.org/manual/ch04.html).
+
 ## Adjusting virtual machine window size
 
 Once the guest additions are installed, the window size can be changed. Select the option **Adjust Window Size**. Then resize the window to make it appear as a normal working size.