Panasonic AG-HMC150P Quick Start Manual page 5

Format the SD Chip.
Formatting the SD Chip must be done everytime, it allows the camera to write the
necessary files to the chip. It also makes sure that there is room on the card for
the production.
Formatting erases all content on the SD Chip, be sure to use a card that you are
not storing information on.
Push MENU to Exit the menu screens.
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