how to check fake memory storage devices. 64GB, 120GB , 160GB pen drive or external hard disk drives can be tested using this simple freeware software. These software's write data patterns to drive and verify those written data. When some drives has large data storage size on its MBR but actual surface data size can be reduce or it can be zero. Like these software's can write data to location where path on MBR and check fake Drive spaces.