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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

Simple Format Drive

Step 2: Open CMD

Press Windows+R to open “Run” box. 
Type "CMD"
Click OK

Step 3: Run Cipher

cipher /w:<driveletter>:\

Step 4: Run Format

format <driveletter>: /fs:NTFS /p:7

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