VBox part 1b: Warnings and Errors when Starting Up
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

BIOS virtualization warning
^^^^^^^^^^^^^^^^^^^^^^^^^^^

When you start the computer, you may get a warning like this:


.. image:: virtualization-disabled.png
   :alt: pop-up BIOS virtualization disabled
   :scale: 60


or expanded:


.. image:: virtualization-disabled_expanded.png
   :alt: pop-up BIOS virtualization disabled
   :scale: 60



This means your BIOS has virtualization disabled. You must enter the BIOS and  
enable Virtualization Technology

Here is an example of the steps required:

  1. shut down the computer
  2. boot the computer and press F10 or DEL to enter the BIOS
  3. go to
         Security-> System Security
  4. Look for something saying "Virtualization Technology"; ENABLE IT
  5. Save and restart the machine.


Ethernet Port Warning
^^^^^^^^^^^^^^^^^^^^^^^

When you start the Virtual Computer you will probably get a pop-up window
with a warning that the network adapter "eno1 Wi-Fi (AirPort) (adapter 1)"
was not found.


.. image:: adapter-not-found.png
   :alt: pop-up window: adapter not found
   :scale: 60

Click on the box that says "Change Network Settings"

Now you will get a Virtual Box tool to change the settings, already
on the Network tab.   Just click OK, because it has probably autodetected your
network card.


.. image:: choose-network-adapter.png
   :alt: virtual box network adapter settings
   :scale: 60



Now the virtual computer should boot.