"Disk is not formatted, format it now?" appears ewhen I open my card reader
Hi I have a problem, when I open my memory card reader, a prompt screen appears and says " disk not formatted, format it now?". I don't know what happened with my drive.I inserted the memory card into other reader and it just says the same. I tried recovery software Recuva to back-up my files. But it only said "unable to determine file system type". Did I download the wrong software or has overwriting occurred? Because I have researched that overwritten files cannot be recovered anymore. What should I do? Please help me. Thanks.