Thanks, I have already turned off the memory extension and I didn't have the the rom file (I did a fastboot install). So is this size normal ?? What's taking so much space for the system. The ROM itself is around 4GB onlyCheck if memory extension is turned on. Turning that off will free a few GB, and if you haven't deleted the file you used to flash it (if you used TWRP to do it) then do that too.