The Jargon File (version 4.4.7, 29 Dec 2003):
root mode n. Syn. with wizard mode or wheel mode. Like these, it is often generalized to describe privileged states in systems other than OSes.The Free On-line Dictionary of Computing (30 December 2018):
root mode Synonym with wizard mode or "wheel mode". Like these, it is often generalised to describe privileged states in systems other than operating systems. [Jargon File]