Posts Tagged ‘virtualbox not booting black screen’

VirtualBox: Guest OSes not booting (black screen) after updating the host machine

On 90% of the cases, this is due to a bad (either corrupt or mismatched) expansion pack (both on Linux and Windows).
Follow the steps below to reload the expansion pack:

Start VirtualBox and click on File and then on Preferences, as shown on the image below:

How to reach the preferences menu in VirtualBox in order to uninstall the expansion pack.

How to reach the preferences menu in VirtualBox in order to uninstall the expansion pack.

Navigate to “Extensions” and select/highlight “Oracle VM VirtualBox Extension Pack X” where X represents the version of the pack (irrelevant for now).

VirtualBox extensions page within the preferences menu.

VirtualBox extensions page within the preferences menu.

Then click on the REMOVE button and confirm your action when asked to:

VirtualBox Removal Confirmation Dialog

VirtualBox Removal Confirmation Dialog

If you’re using Linux, it’s certain that you’ll need to authenticate as root in order to proceed (absolutely no harm in this):

VirtualBox (Linux) - Authentication

VirtualBox (Linux) – Authentication

Once you’ve successfully removed the Extension Pack, simply reinstall it again by downloading the latest version of it through the official website.
Extension packs are usually delivered on the “vbox-extpack” format, which allows you to install them by simply executing them on a system where VirtualBox is installed (that would obviously be the HOST machine).

If that fails to work, you can alternatively download the extension pack (Right-Click, Save As) and installing it manually through the Preferences menu (pretty much the same procedure, but in lieu of removing it, you’ll be installing it).