I have a Samsung Galaxy Tab 2 10.1 GT-P5113. Sometimes appears this message "SD card blank or has unsupported file system". I have to mount the microSd card (SanDisk 32 GB) in order to use it. I don't know what's happening. Sometimes I can't play a video from the SD card. Then I play video from the internal storage and later I'm able to play videos from the SD card!!! The card has 32 GB but the system reports 29,66 GB of free space. Any suggestions???