"MacOS Could not be installed on your computer" screen after start up

Occasionally an operating system update can be disrupted during installation resulting in your computer displaying this screen on startup:

To bypass this screen you'll need to reset the startup disk.

  1. When you are looking at the screen pictured above, click around on the screen until the top toolbar containing the Apple in the upper left hand corner of the screen appears. Typically clicking on the image of the landscape in the center of the screen will cause the tool bar to appear.
  2. When the tool bar appears, click on the apple in the upper left hand corner
  3. Choose "Startup disk"
  4. In the Startup Disk window, make sure that the Macintosh HD is selected and then press Restart
  5. After restart, you should be returned to your login page.

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