I was formatting a working sd card in a camera (using Windows Vista), but had to cancel the format. Not a problem I though, as I'd do it from the start later. However, the card is not not recognised, so that Windows no longer see the card as a drive. As a result I can't select it and format it. The card would still be working if only I could find a way to select it for formatting. Any suggestions how I can get around this problem?