Quote:
Originally Posted by booklover6
I believe the class 10 is the problem. What class is the 4GB that you tried? Ereaders tend to do better with a slower speed card.
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Doubtful, I have around a dozen Class 10 cards of sizes from 4-32GB and all work with all my Sony eReaders as well as smartphone... Class 10 is not a very fast card nor a very slow one... I'd recommend the OP to try the card in other devices and/or reformat as well as running a disk check over it on a computer...