Canon POWERSHOT SD630 DIGITAL ELPH User Manual page 118

• Please note that formatting (initializing) an memory card
erases all data, including
protected images.
• You are recommended to use memory cards that have been
formatted in your camera.
• The card supplied with the camera may be used without further
formatting.
• When the camera is malfunctioning, a corrupted memory card
might be the cause. Reformatting the memory card may solve
the problem.
• When a non-Canon brand memory card is malfunctioning,
reformatting it may solve the problem.
• Memory cards formatted in other cameras, computers, or
peripheral devices may not operate correctly in this camera.
When that happens, reformat the memory card with this
camera.
• If formatting in the camera does not work properly, turn the
camera off and re-insert the memory card. Then turn the
camera back on and format again.