Originally Posted by
DanK
I don't have any idea whether formatting will solve whatever is wrong with your card, but as the video says, all cards should be formatted in the camera before they are used. The conservative approach, which I follow, is to format the card in the camera each time after one uploads the images from it. I do this routiinely(after the images have been backed up, of course). I don't think you indicated whether you had already formatted the card in your camera. If you had, and particularly if you do it routinely, then I am guessing something else may be the problem. In that case, my own preference would be to throw it out. Fortunately, SD cards have become very cheap--32 GB SanDisk SD cards range from $13 to $21 at B&H--so replacing defective ones has become less painful.