Nikon D300 Complete Manual page 329

11. Navigate to Copy d-0 and press the > key on the
Direction pad to select it.
12. At this point you can continue and name this white
balance by pressing the center of the Direction pad
and selecting Edit comment or you can just press the
OK button to complete the setting.
If you want to use the white balance from an image already
on the camera:
1. Press the MENU button to show the menu system.
2. Use the Direction pad to navigate to the SHOOTING
menu (green camera icon).
3. Use the Direction pad to navigate to the White
balance option and press the > key on the Direction
Thom Hogan's Complete Guide to the Nikon D300
V1.02
Page 329