Dual boot question

I understand that dual booting is doable, but I do not know the specifics of it. I am wanting it to work a very certain way, and am wondering if it's doable.
What I want to do is have 2 hard drives, harddrive A and harddrive B. I will install windows on both harddrives. Then, upon booting my computer, I want the option to log onto Windows on either harddrive A or B. If I log onto A, I cannot see, access, detect.. or any any way know that harddrive B exists on my machine. It's virtually not even in there. The same thing if I log onto windows on harddrive B, I cannot see harddrive A.
Is there any way to do this?