Hi CAWILAGuy
I am Dave, I will help you with this.
You can do that in Command Prompt, please note, it will take a long time to securely wipe a drive
Click your Start Button, then just type cmd and on the resulting list, right click Command Prompt and choose 'Run as Administrator.
Run this command and hit Enter:
diskpart
Run this command and hit Enter:
list disk
(Make note of the disk number you want to wipe and enter it into the next command - replace X)
Run this command and hit Enter:
select disk X
Run this command and hit Enter:
clean all
Wait for that command to complete, then close Command Prompt.