Hi Rikki
It is not that the USB or HD is locked up. I don't have the original files in the present USB to go to, but just a few of the SMF songs have a red locked padlock next to them in the HD. The stick and HD works fine. I am sure it is an internal lock, but the manuals don't seem to address it. The Korg forum is up, so posted there.

Thanks for the reply.