From what's been said thus far it seems that the camera won't reformat either slot, SD or QXD. To me that suggests the problem may be with the camera. Have you tried upgrading or re-installing your firmware? Perhaps a new SD card? Even a cheap one would eleminate the question of wheather the existing cards have been corrupted. I wish you luck resolving this problem.
This is the same recommendation I was just about to post. But to do it you will need a formatted card in the Primary slot.
Another suggestion is to turn off the camera. Remove the battery. Add a different and freshly charged battery. Then add the cards. Turn on the camera and see if the camera recognizes each card. Then try and reformat them in the camera. I know this sounds like a crazy suggestion, but nothing else seems to be working.
To double check the cards, use your card reader and attach it to your computer. Add the card. Open Nikon Studio and see if it will recognize the card and the images on the card. You can download the free Nikon software at NikonUSA.
I recently removed the xqd card from the camera and copied files from it. Removed the card from the reader and inserted it into the camera. I tried to format the xqd card or the secondary micro SD card but the camera will format neither card. It wii store pics on the xqd card. Ant suggestion to fix this greatly appreciated. Do I have a setting in the menu that may be preventing the format to run? .
There was an easy fix to this problem. Remove all cards(xqd and SD) and then reset the camera. You can then put the cards back in one at a time and format the cards. All is now working fine. Thanks for the suggestions but I found this out at a Dodds camera store.
The cards had to be removed in order to reset the camera. Then one card was placed in the camera and it reformatted. Second card put in and it reformatted. Camera problem solved.
this may have been my problem also. I learned you have to hit the ok button on the left side of the screen, not the center button on the up/down/rt/lt controller on the right side of the screen.