When I turn on my Sansa Clip+ It tells me to free up space and doesn’t let me do anything else. This started after I added a 16GB external card. When I connect it to my PC all the internal folders are empty. Is there a way to format it other than from the device itself?
Yes. Format it through Windows on your PC…
I’d plug it into the PC via USB mode, open My Computer, right click on that drive and select Full Format. 
Well, Foster, you’d be making a mistake . The Sansa has to be formatted to FAT32. Windows won’t automatically choose that. If the problem started with the 16 GB card, put that card in a card reader, connect it to a computer and find it in WIndows Explorer. Right-click, Tools, Error-checking, run that. It’s probably a bad card. You can also run error-checking on the Sansa internal memory.
fosterdrew is the latest re-incarnation of our multiple-identity troll here on the forum that replies with silly or duplicate responses and gives bad or irrelevant advice. 
