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Canon® EOS Rebel XSi/450D Guide to Digital SLR Photography by David D. Busch

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Format

Use this item to erase everything on your memory card and set up a fresh file system ready for use. When you select Format, you’ll see a display like Figure 3.23, showing the capacity of the card, how much of that space is currently in use, and two choices at the bottom of the screen to Cancel or OK (proceed with the format). A blue-green bar appears on the screen to show the progress of the formatting step. (The optional Low Level format invoked with the Trash button is a slower, but more thorough reformatting that can help restore a memory card that has picked up some bad sectors that aren’t locked out by the normal format step.)

Figure 3.23. You must confirm the format step before the camera will erase a memory card.

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