Missing 8Gb storage after formatting Mi4 Memory

Dec 9, 2014
Hello Everybody. I need your help.
My Xiaomi mi4 memory card got error after i formatting my memory card

when the first time i connected my mi4 to pc, my mi4 device have 12gb storrage, but after i erase my memory card from my mi4 gadget. my storage only 4gb left and 1 hidden device which one i cannot open it.

erase my storage with this


what happen next. my storage only 4,37 gb left (removeable disk G) and one hidden hich one i cannot open it (removeable disk I)

please help me. anyone have a solution for my problem?

thank you very much and sorry for my bad english