Formatting Memory Cards; Format The Memory Card - Canon PowerShot ELPH 300 HS User Manual

Formatting Memory Cards

Before you use a new memory card or one that has been formatted in other
devices, you should format the card with this camera. Formatting (initializing) a
memory card erases all data on the memory card. As you cannot retrieve the
erased data, exercise adequate caution before formatting the memory card.
Before formatting an Eye-Fi card (p. 179), be sure to install the software
contained on the card to a computer.
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Display the menu.
Press the n button.
Choose [Format].
Move the zoom lever to choose the 3 tab.
Press the op buttons to choose [Format],
then press the m button.
Choose [OK].
Press the qr buttons to choose [OK], then
press the m button.

Format the memory card.

Press the op buttons to choose [OK],
then press the m button.
The memory card will be formatted.