Commented Issue: this is not a wbfs formatted disk [6572]

this is my problem . i am using a 16gb kingston c4 card. i have formatted it with wbfs and install 5 games on it. after a lot of playing times i wanted to add nba 2k12. when i did it and re insert the card into the wii key fusion , i opened the wii and i saw as usually the game cube logo. when i hit the logo the wbfs screen says that the card in not a wbfs formatted disk.

I try to format the card with win7 but i am getting a message that the disk is write protected. but it isnt. after a lot of google searching i tried diskpart but still nothing.
Windows can read that i insert a 16gb device but can't formatting.

please help me if you know smth.
sorry for english ...
Comments: ** Comment from web user: BlueMew151 **

Did you check if the SD card is locked?

Link to check: http://www.pocket-tunes.com/images/kb/SD%20card%20lock%20slider.jpg