Not sure what you mean, you ask about cloning a hard drive, then about wiping a hard drive. Not sure what you are trying to achieve.
My GUESS is that you have bought a NEW hard drive, and you want to replace your EXISTING hard drive with the NEW one, so you want to copy everything (Windows etc) from the existing hardrive to the new one (if you explained clearly what you wanted to do in the first place we would not have to guess).
There are products that can clone hard drives, and one I have heard of is Paragon Drive Copy (but I have never used it). There are others.
Not sure what you mean by "is it safe" (what can be unsafe about it?) but I assume products like Paragon Drive Copy work fine.
If you can tell us what you are trying to achieve we may be able to give a more accurate answer.