Nikon D800 User Manual (en)

32

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Memory cards must be formatted before first use or after being 
used or formatted in other devices.

I (Q) and O 

Q) buttons.

Hold the 

I (Q) and O (Q) 

buttons down simultaneously 
until a blinking 

C (format) 

appears in the shutter-speed 
displays in the control panel 
and viewfinder. If two 
memory cards are inserted, 
the card to be formatted is 
shown by a flashing icon. By 
default, the primary card slot 
(

0 89) will be selected; you 

can choose the secondary slot 
by rotating the main 
command dial. To exit without formatting the memory card, 
wait until 

C stops blinking (about six seconds) or press any 

button other than the 

I (Q) and O (Q) buttons.

D

Formatting memory cards permanently deletes any data they may contain.

 

Be sure to copy any photographs and other data you wish to keep to a 
computer before proceeding (

O (Q) button

I (Q) 
button