The original problem was failure of the ipod nano to sync with itun
Windows 10 identified a problem with ipod nano disc drive and I authorized a repair with the result of all music deleted from the ipod. The music still exists in my itunes library and my laptop is authorized. The original problem was the failure of the ipod nano to sync with itunes. In itunes, file, devices, the only prompt is "transfer purchases from IPO. I recently updated Itunes prior to purchase of new music and syncing problems occurred after update.
iPod nano, Windows 10