Today I was taking pictures on my Canon digital camera when all of a sudden it would not let me view or take any more photos and displayed 'memory card error' message on the screen. I tried it in another camera and got another error. When I got home and tried to put it in my laptop it is appearing in 'My Computer', but when I click on it, it says "The disk in drive F is not formatted." And asks if I want to format it. I have yet to choose an option because I didn't want to hurt the chances of recovering the photos. ANY INFO WOULD BE APPRECIATED! I have a lot of irreplaceable photos on the memory card. Thanks.