tried to take a picture and the evo said '' unable to save file to sd card due to insuffecient file permissions''. on my notification bar at my home screen, there is a picture with a question mark. when i pull it down to read it it says '' mounted read only'' in bold type. belpow that it says '' the sd card has an unexpected problem. tappin..'' and the rest is unreadable because it is cut off by the corner of the screen. 1. what does this mean? 2. what should i do? thanks in advance for all help.