Why am I unable to format or use a CompactFlash storage card with the camera?

• Make sure you're using an ATA-compatible Type-I CompactFlash memory card. Make sure you've installed the card correctly. The card's label should be facing the front of the camera, and the arrow(s) on the label should point in. If you need help with a card, call the appropriate number: Lexar Media at (800) 789-9418, SanDisk at (408) 542-0595 or Delkin Devices, (858) 586-0123.