I have an external usb drive connected to my AEBS that I use for my iTunes library (mainly). I was transferring a file to the external from my desktop and changing the genre on about 40 music files all at once when iTunes crashed. It wouldn't close completely nor could I force quit. I had to shut down completely by pressing the power button on my computer until it turned off. I booted up and things seemed ok but I couldn't connect to the external. I rebooted and still no joy. I am not sure what to do to connect to it. Any thoughts?