My Xperia aqua m4 wont recognise my SD card

[Luby1]

My Xperia aqua m4 wont recognise my SD card. Even in settings there nothing the internal storage is in bold type but sd card is in faded type so I cannot select it.  Or there is no option at all 

[Edneid]

Meu M4 nao reconhece Sd card...qual solução?? 

My M4 does not recognize Sd card ... what solution ??

gt