Even better, use the free version of the superb image / backup app "Macrium Reflect". That too will make a bootable USB - and will quickly and easily make full images of any drive (I just use it to image C) which it can almost as quickly and easily restore, using that USB.
Can't say enough good things about this app except that the interface can be a little confusing at first. But well worth learning. It's saved me many times.