Formatting the memory card
If your device cannot read content on the memory card, format the memory card on your device.
Find and tap [Settings] > [Storage] > [This device] > [SD card].
Tap (More icon) > [Format], and then perform formatting on the next confirmation dialog.
- All content on the memory card gets erased when you format it. Make sure you first make backups of all data that you want to save.