hard drive initialization issue

today I got an 2'5 inch hard drive enclosure, but when I plug in my new 2'5" hard drive in, my computer can not recognize it. My hard drive is new and enclosure is new, I think there is something wrong with my steps.

So I start up my computer management tool, but I can not format it, and give me a message that the hard drive cannot be initialized. I did good and find the first link. it is very helpful. So I keep this link here for my personal future use.

1. Installing second hard drive - says "Not Initialized" and won't let me format