Nikon D1 - Manual (Page 26)

13
Removing memory cards
When removing memory cards, turn the camera off and open the
card-slot cover. After confirming that the access lamp is off, stand
the eject button up and press it down to eject the card.
Do not attempt
to remove the card while the access lamp is on. Doing so could result
in loss of data or in damage to the camera or the card.
✔
Important: The compact flash card may become hot while in
use. Observe due caution when removing memory cards
from the camera.
Formatting memory cards
Memory cards must be formatted before they can be used to record
photographs. When formatting memory cards, first make sure the
camera is on, then hold the
buttons down simultaneously for
two seconds. A blinking FOR indicator will appear in the top control
panel. To format the memory card, press the two buttons again.
✔
Note: Formatting memory cards permanently erases any
data they may contain. Before formatting the card, be sure
to make copies of data you would like to keep.
When the card is formatted, the frame-number display in the control
panel on top of the camera will show 1, and the number of exposures
remaining will appear in both control panels (when a hundred or
more exposures remain, the control panels will show FL).
First Steps: Insert the Memory Card