Editing Disk operating system (section)

==Main OSes==
Some disk operating systems are the operating systems for the entire computer system.
*The [[Burroughs Corporation|Burroughs]] (now Unisys) [[Burroughs MCP|Master Control Program]]<ref name=MCP/> (MCP) for the [[Burroughs large systems|B5000]] originally runs from a drum, but starting with the B5500 it runs from a disk. It is the basis for the MCP on the B6500, B7500, and successors.
*The SIPROS, [[Chippewa Operating System]] (COS), [[CDC SCOPE|SCOPE]], MACE and [[CDC Kronos|KRONOS]] operating systems<ref name=CDC/> on the [[Control Data Corporation ]] (CDC) [[CDC 6000 series|6000 series]] and [[CDC 7600|7600]] are all disk operating systems. KRONOS became [[NOS (operating system)|NOS]] and SCOPE became NOS/BE.
*The [[GECOS]]<ref name=GECOS/> operating system for the [[GE]] (later [[Honeywell]] and [[Groupe Bull]]) [[GE-600 series|600]] family of [[mainframe computer]]s (it later became GCOS).
*The IBM Basic Operating System/360<ref name=BPS/> ([[BOS/360]]), [[DOS/360 and successors|Disk Operating System/360]]<ref name=DOS/> (DOS/360) and [[OS/360 and successors |Operating System/360]]<ref name=OS/> (OS/360) are standard for all but the smallest [[IBM System/360|System/360]] installations; the [[360/67]] also has Control Program-67 /Cambridge Monitor System<ref name=CP-67 /> ([[CP-67/CMS]]) and Time Sharing System/360 <ref name=TSS /> ([[TSS/360]]). BOS is gone, CP-67/CMS has evolved into [[z/VM]], DOS has evolved into [[z/VSE]], OS has evolved into [[z/OS]] and TSS/360 evolved into TSS/370 PRPQ, which is now gone.
*The [[UNIVAC EXEC II|EXEC II]] operating system for the [[UNIVAC 1107]] and [[UNIVAC 1108|1108]], and the [[EXEC 8]] operating system for the 1108, which has evolved into OS 2200 for the [[Unisys]] [[UNIVAC 1100/2200 series#UNISYS ClearPath IX series|ClearPath Dorado Series]].
*The [[DEC BATCH-11/DOS-11|DOS-11]] operating system for [[Digital Equipment Corporation|DEC]] [[PDP-11]] [[minicomputer]]s.
*[[CP/M]] is a disk operating system, as the main or alternate operating system for numerous microcomputers of the 1970s and 1980s.
*[[Apple DOS]] is the primary operating system for the [[Apple II]], from 1979 with the introduction of the [[floppy disk drive]], until 1983 when it was replaced by [[ProDOS]].
*[[TRSDOS]] is the operating system for the [[TRS-80]] line of computers from Tandy.<ref name=trsdos/>
*[[MS-DOS]] for [[IBM PC]] compatibles with [[Intel]] [[x86]] CPUs. [[86-DOS]] was modeled on [[CP/M]], and then was adapted as the basis for [[Microsoft]]'s [[MS-DOS]]. It was rebranded by IBM as [[IBM PC DOS|PC DOS]] until 1993. Various compatible systems were later produced by different organizations, starting with [[DR-DOS]] in 1988.