Overwrite a hard drive for multiple passes is the safest way to keep data private, leaving no traces for professional recovery programs, Macrorit Data Wiper provides 5 kinds of overwriting method to meet your needs.
You can use command line to overwrite hard drive for ones, zeros, both random data, and you can use Macrorit Data Wiper to overwrite drives for 3 passes like DoD 5220.22-M, 7 passes like DoD 5220.28-STD;
Not only can Macrorit Data Wiper wipes disk partition, but also wipes free space, if you have already backed up data, do as following to wipe partition in Windows 10.