Format memory cards. To begin formatting, choose a memory card slot and select [Yes]. Note that formatting permanently deletes all pictures and other data on the card. Before formatting, be sure to make backup copies as required.

Caution: During Formatting

Do not turn the camera off or remove memory cards until the message [Formatting memory card] clears from the display.

The Format Buttons

Keeping both format (O/Q and S/Q) buttons pressed for over two seconds displays a dialog prompting you to select a card for formatting.