I've heard the equivalent of root is the "SYSTEM" account. But I used a tool called "RunAsSystem" to open a shell as SYSTEM, and I'm still getting "access denied" errors even though I know the files in question aren't in use. How can I get a shell from which I can perform any action on any file regardless of whatever permissions are set?
EDIT: This is not a duplicate of this question. That one is asking why a standard administrator account doesn't have certain permissions; I'm asking if there's an account that has full permissions for everything.
EDIT2: It's not a duplicate of this one either. That question is asking how to get a command prompt as the SYSTEM user. In my question I've clearly stated that I was able to do so, so I'm certainly not asking how to do that.
Also, I haven't chosen an accepted answer yet because I haven't decided yet--I didn't forget, if you were wondering.