My Watch dog save game isnt getting save

[adirxlman05 0]

Hello guys i installed the watch dogs i'v been played in the first mission (big brother) i finished it and when i want to exit fom the game its writeing error the game cant be save please re-enter your storage device i did it 4 times already.

please helppp

[Flaminek 41]

u using a flash drive if so try something else.