Definition Clean Install
Explanation: Clean install refers to a way to install or upgrade an OS to a computer system. There are two ways to conduct a clean install. (1) upgrade of an operating system (OS) on a hard drive that already has an OS running off of it without carrying over any settings of the older OS, such as user preferences or information about the hardware and/or the software. (2) To install an OS on a hard drive that does not already have an OS installed on it or a newly formatted hard drive.
Other definitions in programming such as Clean Install in Dictionary C.