How do i get the same desktop picture on my external monitor, as on my macbook pro, and get it to stay that way when unplugged?

Everytime I use an external monitor with my macbook pro the desktop picture always changes to the same one as on my external hard drive...how do i get the external monitor to show the same picture as my macbook pro and keep it that way?

Posted on Jul 25, 2012 5:20 AM

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