Nikon D300 User Manual page 61

1. There are images on only one of the cards. Think about
this for a moment. If only one card has images on it, you
have no real reason to choose a source card, do you?
Only one card has images, so it has to be the source. This
is the most likely scenario.
2. The SD card's write-lock switch is in the on position.
This usually happens while inserting the SD card into a
card reader on a slight angle, or even by angling it when
putting it into the camera. The switch is on the side and
sometimes gets moved from off to on.
You'll notice this problem in other ways since the
camera cannot write to the SD card with write-lock set to
on. You will see a
try to format the card, and a blinking card slot icon will
appear on the
may take a while to realize that you've accidentally
moved the lock switch to the on position. The camera is
smart enough to write to the CF card when it can't
access the SD card, so you may be happily snapping
images, thinking they are flowing to the SD card when
they are actually being sent to the CF card.
One thing that makes it harder to realize that the lock
switch is enabled is that the camera will continue
displaying images found on the SD card if you have
Playback folder
camera can still read the card and display images, it just
can't write to a locked SD card. Fortunately, the CF card
has no lock.
I'm going to present this information step-by-step as if you
have all choices available. If you only have images on one
CHA error on the
Control panel
set to All
61
Control panel
and Monitor. Interestingly, it
in the Playback Menu.
if you
The