Olympus Camedia C-3040Zoom Instructions Manual page 158

Initializing cards (Formatting)
You should check the images on the card carefully before initializing the
card.
Initialization erases all the data on the card, including protected images.
When you initialize a card you have already used, check that you do not
erase any important data.
If you use a non-Olympus brand commercially available card or card that
has been formatted on a personal computer or other device, it may not be
recognized by the camera. In this case, the card should be initialized (for-
matted) on the camera before use.
You cannot initialize a card that is protected by a write-protect sticker.
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