Complete Guide to Securely and Reliably Wipe Hard Drive on Windows OS using CMD tools
Format hard drives securely by using the windows command line utilities cipher and format, cipher can be used to wipe empty disk space, but if you perform a format of the drive, then the entire drive will have empty disk space allowing for a secure delete by overwriting with zeros then ones followed by random numbers.
Step 1: Format the Drive
Step 2: Open CMD
Press Windows+R to open “Run” box.
Step 3: Run Cipher
Step 4: Run Format
format <driveletter>: /fs:NTFS /p:7
Alternatively if you would like to use a third party tool that is faster than built in windows tools, there are great third party tools like DisposeSecure from east-tec. DisposeSecure is designed to run from any bootable device like USB, CD, DVD or floppy and will offer you a great flexibility in the wiping process by making it independent from the operating system that was previously present on that system.