Formats the memory card or the internal memory.
When you use a memory card with this camera for the first time, it is recommended to format the card using the camera for stable performance of the memory card before shooting. Note that formatting permanently erases all data on the memory card, and is unrecoverable. Save precious data on a computer, etc.
MENU (Settings) (Memory Card Tool) or (Internal Memory Tool) [Format] [OK]
Note that formatting permanently erases all data including even protected images.