Nikon D300 User Manual page 435

Camera Button Format Method
This is the fastest method to format the memory card, and is a
no-brainer for the D300. For the D300S, it is a little more
complicated since it only formats the current primary card
slot and not the secondary.
You can select the secondary slot instead, as I'll describe in
the upcoming step-by-step method.
buttons and Control panel
Notice how these two buttons are marked with the red
FORMAT symbol. Make sure that any pictures on the
memory card have been saved. To do the actual formatting
process, you'll follow these steps:
1. Hold down the
time (Figure
flashing on the
arrow).
▪ D300S: While you're still holding down the two
buttons and
command dial
SD or
it's easier than it sounds. You can see in
image 3 that I've selected the
formatting.
screens used to format the card.
Delete and
5-4, images 1 and 2), until
Control panel (Figure
For is flashing, you can rotate the
with your thumb to select either the
CF card slot. It's a three-finger operation, but
435
Figure 5-4
MODE buttons
5-4, image 3, red
SD
shows the
at the same
For starts
Main
Figure 5-4,
card slot for