#1. "RE: D7000 Formating Issues" In response to Reply # 0
Push simultaneously until the top display say "FOR". Release, then push simultaneously again. The area of the display that normally shows remaining room on the card will briefly say "FOR", and you should be good to go.
Depending on how you have things configured, you may be seeing the images that remain on the second card. I use card 1 for RAW and card 2 for JPG. When I do a format, only card 1 is formatted. Card 2 stays intact, and if you scroll through the images on the display, they will still show up.