Originally Posted by borat_sagdiyev
no you have to use a program called killdisk because formatting doesnt destroy any data.
Deleting the partition erases the files etc, putting a new partition and formatting it overwrites the stuff.
edit: it can still be recovered though, but the only way to really destroy all of the data so no one will ever be able to know what stuff was on the hdd is to throw the hdd into an active volcano or something. You can even open it and smash the disc into pieces, but the data is still there.