Okay. I tried that. It doesn't get past the apple. About once per minute, the apple disappears, then reappears, then the backlight comes on, then goes off. And that cycle just keeps repeating.
My best guess is something got corrupted. Perhaps the ipod needs restored. However, the second method mentioned in the manual works:
"load the original firmware by shutting down the device, then clicking the Hold switch on and connecting the iPod to your computer. "
Can you think of any thing else to try before a restore? I should mention, if it can only boot into one system, I'm glad its rockbox.
Thanks for your suggestion.