The hard disk folder (directory) that contains the operating system. In Windows, it is typically the \Windows or \Winnt folder. In the Mac, it is called the System folder. See system file and system disk.
"system folder." YourDictionary, n.d. Web. 06 June 2018. <http://www.yourdictionary.com/system-folder>.
system folder. (n.d.). Retrieved June 06th, 2018, from http://www.yourdictionary.com/system-folder