Family of CP/M- and DOS-compatible multi-user multi-tasking operating systems
Operating system
Multiuser DOS
Novell DR Multiuser DOS Release 5.1
Developer
Digital Research, Novell
OS family
CP/M
Working state
Discontinued
Source model
Closed source
Final release
7.22 R18 / 21 April 2005; 19 years ago (2005-04-21) (REAL/32: 7.95)
Available in
English
Update method
Re-installation
Package manager
None
Platforms
x86, 68000
Kernel type
Monolithic kernel
Default user interface
Command-line interface (COMMAND.COM)
License
Proprietary
Official website
Various (see notes)
Multiuser DOS is a real-time multi-user multi-tasking operating system for IBM PC-compatible microcomputers.
An evolution of the older Concurrent CP/M-86, Concurrent DOS and Concurrent DOS 386 operating systems, it was originally developed by Digital Research and acquired and further developed by Novell in 1991.[1][2][3] Its ancestry lies in the earlier Digital Research 8-bit operating systems CP/M and MP/M, and the 16-bit single-tasking CP/M-86 which evolved from CP/M.
When Novell abandoned Multiuser DOS in 1992, the three master value-added resellers (VARs) DataPac Australasia, Concurrent Controls[4] and Intelligent Micro Software[5] were allowed to take over and continued independent development into Datapac Multiuser DOS and System Manager, CCI Multiuser DOS, and IMS Multiuser DOS and REAL/32.[5]
The FlexOS line, which evolved from Concurrent DOS 286 and Concurrent DOS 68K, was sold off to Integrated Systems, Inc. (ISI) in July 1994.
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MultiuserDOS is a real-time multi-user multi-tasking operating system for IBM PC-compatible microcomputers. An evolution of the older Concurrent CP/M-86...
The MultiuserDOS Federation (MDOS) was an industry alliance to promote the growth and acceptance of multi-user DOS-based solutions on 286, 386 and 486...
both MS-DOS and CP/M-86 software), later with MultiuserDOS (compatible with both MS-DOS and CP/M-86 software) and DR DOS (compatible with MS-DOS software)...
8-bit, 16-bit and 32-bit systems like MP/M, Concurrent DOS, FlexOS, MultiuserDOS, DOS Plus, DR DOS and GEM. It was the first large software company in the...
verbose messages, but in contrast to the situation under the MultiuserDOS family normal DOS drivers do not typically display additional information. The...
multiuser multitasking protected mode operating systems was not DOS-based by themselves. Concurrent DOS 386 was later developed to become Multiuser DOS...
are often captured by batch programs through IF ERRORLEVEL commands. MultiuserDOS supports a reserved environment variable %ERRORLVL% which gets automatically...
>> SETCD.BAT CALL SETCD.BAT DEL SETCD.BAT Alternatively, under MultiuserDOS and DR-DOS 7.02 and higher, various internal and external commands support...
– a stripped-down single-user variant of Concurrent PC DOS 4.1–5.0 MultiuserDOS – Digital Research/Novell MDOS family including Datapac System Manager...
Concurrent DOS (a.k.a. CDOS, Concurrent PC DOS and CPCDOS) (since 1983), a CP/M-86 and MS-DOS 2.11 compatible multiuser, multitasking DOS, based on Concurrent...
under DOS Plus and can be used to make file handling at the command prompt much easier. This feature is also present in Concurrent DOS, MultiuserDOS, System...
file system as if it were an ordinary file. There are also special files in DOS, OS/2, and Windows. These special files allow an application program to interact...
CP/M-86, Concurrent CP/M-86, Personal CP/M-86, Concurrent DOS, DOS Plus, FlexOS, S5-DOS, MultiuserDOS, System Manager, REAL/32, SCP1700, CP/K and K8918-OS...
Linux and most other versions of Unix), Mach-O (on macOS and iOS) and MZ (on DOS). Metadata is casually used to describe the controlling data used in software...
at-sign character (@) is used for filelists by many DR-DOS, PalmDOS, Novell DOS, OpenDOS and MultiuserDOS, System Manager and REAL/32 commands, as well as...
use partition IDs C0h and D0h for multi-user security. Versions of MultiuserDOS use these partition IDs for secured FAT partitions with multi-user security:...
MS-DOS 4.0 (multitasking), a multitasking operating system Multitasking DOS sub-system in IBM OS/2, e.g. C:\OS2\MDOS\ MultiuserDOS (aka DR MDOS), a DOS-...
DOS 386 or DOS/386 may refer to: Concurrent DOS 386, a Digital Research CP/M- and DOS-compatible multiuser multitasking operating system variant since...
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