[gedster314]

I've had some cards that were formated fat32 but were corrupted and windows refused to see them. No windows tool could see them. In linux GParted would error out when trying to format them.

My last ditch effort to fix cards is to zero them out with DD! It worked like a charm. Although it's a *nix tool there is a windows version available too. Be warned, it is command line and it's options are a little cryptic but it is a great tool.