Canon EOS Rebel T5 18-55 IS II Kit - Manual (Page 50)

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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. Even protected images will be erased, so make sure
there is nothing you need to keep. If necessary, transfer the
images and data to a computer, etc., before formatting the card.
1 Select [Format card].
Under the [51] tab, select [Format
card], then press <0>.
2 Format the card.
Select [OK], then press <0>.
X
The card will be formatted.
X
When the formatting is completed,
the menu will reappear.
For low-level formatting, press the
<L> button to append [Low level
format] with a checkmark <X>, then
select [OK].
3 Formatting the Card
COP
Y