hi ,.im trying to find the speseficasions of ,. the READ/WRITE date on ,. a 512GB macbook pro retina display ,. at the mo ,.i only have from ,. this ,. ,. also ,.if i wanted to erase the free space on my SSD ,. ! or the whole disk for that matter ,. i cant ,. ! ,. any advise on this would be great ,.