DP Shredder 1.5 screenshot Erase file / folder and overwrite disc free space. Use the following methode: 1.) ZERO 2.) Pseudoram Data 3.)RCMP (DSX) 4.) US DoD 5220.22-M (E) 5.) US DoD 5220.22-M (ECE) and 6.) Gutmann 35x Download DP Shredder 1.5