My puzzle is a little different. My K-1 saves to both card slots, for safety. Slot 1 has a Lexar 64 GB. Slot 2 has a Sandisk 64. When formatted, the Lexar shows room for a handful more shots. I've never filled the cards.
When I remove the Lexar from slot 1 to transfer the images to my computer, then put the card back, the K-1 says the cards are unformatted. Huh? When I remove the Sandisk from slot 2, then put it back, there's no problem. So that is now what I do. Can anyone figure out what the problem is? Thanks, Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.