What is another word for disk operating system?
Pronunciation: [dˈɪsk ˈɒpəɹˌe͡ɪtɪŋ sˈɪstəm] (IPA) 
Disk Operating System, abbreviated as DOS, is a term used to refer to a set of computer programs that manage various functions within a computer system. Other synonyms for DOS include operating system, system software, computing software, disk utility programs, and control software. These names refer to the software applications that manage the computer's boot-up process, data storage, memory allocation, and user interface, among other functions. DOS has been a critical component of computer systems since the advent of personal computers, and while its usage has dwindled in recent times due to more advanced operating systems, DOS remains an essential tool for programmers and computer enthusiasts.
