There are tutorials out there on DBAN but formatting is just that and does not mean there is an OS installed. I can only guess you want more than a formatted drive.
On many machines you use restore media and some folk don't have such because they either didn't create the media, lost them or never received any.
Be sure of what you want to do and if you have the media to do it with.
Bob
I want to sell my existing hard drive. However, I don't know how to completely remove my Windows Vista OS from the old drive before I sell it. Would greatly appreciate any help. Thanks.

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