Solution
The SD memory card, SDHC memory card, SDXC memory card or Eye-Fi cards have a write-protect tab.
If the <Write Protect Tab> is in the locked position, the following screen appears.
If
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[Memory card locked] appears in the upper portion of the screen, and
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[Recordable shots] or [Elapsed Time] shows [0]*, shooting is not possible.
* The above indications
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may not appear depending on the model of your camera.
If you try to delete an image and [Memory card locked] appears in the lower portion of the screen, the image cannot be deleted.
If [Memory card locked] appears on the [LCD Monitor] of the camera,
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the <Write Protect Tab> of the memory card being used is in the
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locked (downside) position, so you cannot capture or delete images.
To unlock the tab, slide
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the <Write Protect Tab> of the memory card upward.