Symptoms
You may need to restore or update your iPod, iPod mini, or iPod nano by placing it in Disk Mode if only an Apple logo appears when you turn it on.
Resolution If this happens, the iPod software may have been damaged. Put iPod into Disk Mode, then restore or update iPod’s software.
1. Put iPod into Disk Mode. 2. iPod should appear in the iTunes Source pane and on the desktop or in a Finder window, or in the My Computer window. ..read more

