Canon 1D X - Manual (Page 55)

55
If the card is new or was previously formatted by another camera or
computer, format the card with the camera.
When the card is formatted, all images and data in the card will
be erased. As even protected images will be erased, make
sure there is nothing you need to keep. If necessary, transfer
the images to a personal computer, etc., before formatting the
card.
1
Select [Format card].
Under the [51] tab, select [Format
card], then press <0>.
2
Select the card.
[f] is Card 1, and [g] is Card 2.
Turn the <5> dial to select a card,
then press <0>.
3
Select [OK].
Select [OK], then press <0>.
X The card will be formatted.
X When the formatting is completed,
the menu will reappear.
Before You Start
3 Formatting the Card
COP
Y