Hello, whenever I use diskwriter v1.05 it says my microSD card has "-24mb" of space. I have tried several different sd cards and about 4 different computers and all of them tell me the same thing. The first card I used was a Toshiba 16gb and then another Toshiba 16gb and I just bought another one which is a sandisk 16gb microSD card. I have tried formatting and reformatting with different software and I have tried all versions of diskwriter but I continue to get the same problem. The cards are not fake, I have bought all of them at retail stores. I don't know what the issue can be. I would appreciate any help. Thank you.