DOS Timeline

출처 : http://oldfiles.org.uk/powerload/timeline.htm

Month	Year	Version	Major Changes or Remarks
December	1980	QDOS	Microsoft buys non-exclusive rights to market Pattersons Quick & Dirty  Operating System from Seattle Computer Products (Developed as 86-DOS) (Which is a clone of Digital Researches CP/M in virtually every respect)
July	1981	86-DOS	Microsoft buys all rights to 86-DOS from Seattle Computer Products, and the  name MS-DOS is adopted for Microsoft's purposes and IBM PC-DOS for  shipment with IBM PCs (For Computers with the Intel 8086 Processor)
Q3	1981	CP/M 86	Digital Research release CP/M 86 for the Intel 8086 Processer
Mid	1981	PC-DOS 1.0	Pre-Release PC-DOS produced for IBM Personal Computers (IBM PC)  Supported 16K of RAM, ~ Single-sided 5.25" 160Kb Floppy Disk
August	1982	PC-DOS 1.1	OEM PC-DOS for IBM Corporation. (First Release Version)
September	1982	MS-DOS 1.25	OEM Version for Zenith Computer Corporation.. (Also known as Z-DOS) This  added support for Double-Sided 5.25" 320Kb Floppy Disks. Previously the disk  had to  be turned  over to  use the other side
Q4	1982	CP/M Plus	Digital Research release CP/M Plus for the Intel 8086 Processer
March	1983	MS-DOS 2.0	OEM Version For Zenith - This added support for IBM's 10 MB Hard Disk,  Directories and Double-Density 5.25" Floppy Disks with capacities of 360 Kb
March	1983	PC-DOS 2.0	OEM PC-DOS for IBM Corporation. -  Released to support the IBM XT
March	1983	MS-DOS GUI	Microsoft first announces it intention to create a GUI  (Graphical User Interface)  for its existing MS-DOS Operating System. Microsoft also introduces its first  mouse, "The Microsoft Mouse", including card and software, for US$200. A  major tool in its GUI Development Program. (Windows is Born)
November	1983	MS-DOS 2.01	OEM Version for Wang Computer Corporation.
November	1983	PC-DOS 2.1	OEM PC-DOS for IBM Corporation. -  Released to support IBM PCjr PC
November	1983	Microsoft Windows for MS-DOS	Microsoft formally announces Windows 1.0, but does not have a working  copy!  Microsoft shows Windows to IBM, but IBM is not interested in such an  unfinished product.
November	1983	Digital Research	Meanwhile, Digital Research debuts its GEM GUI for the IBM PC at Fall  COMDEX 1983, and also debuts its first multiuser and multitasking  version of  CP/M, Concurrent CP/M (MP/M) for the Intel-based IBM PC.
December	1983	MS-DOS 2.11	OEM Version for AT&T, Bull & Sony. - Support for foreign and extended  characters was added. Notes >>>> "DOS Menu" There were also a number of Retail/Freeware Menu or Shell Programs  becoming  available  for DOS to help the novice user and shield him from the  'raw' command  line! Prompting Microsoft to speed up its GUI development work!
Early	1984	MS-DOS 2.25	OEM Version for Unknown Computer Manufacture. (Possibly Zenith)
September	1984	MS-DOS 3.0	OEM Version for Various Manufactures.- Support for High-Density 1.2 MB  Floppy Disks and 32 MB Hard Disks was added. - No extended partitions.
September	1994	PC-DOS 3.0	OEM PC-DOS for IBM Corporation
November	1984	MS-DOS 3.1	OEM Version for Various Manufactures. Network support was added.
>	1985	DOSPlus 1.0	Digital Research release DOSPlus 1.0 as a follow on from CP/M Plus
March	1985	Dr GEM 1.1	A small number of Computer Manufactures start to bundle 'GEM' DOS  Manager by Digital Research (Who also published DR-DOS) It stands for  Graphical  Environment  Manager Details & History
September	1985	Dr GEM 1.2	Digital  Research release 'retail' GEM version 1.2
November	1985	Microsoft Windows 1.01	Microsoft announces the Retail shipment of Microsoft Windows, a GUI which  extends the features of the DOS operating system. Windows  provides users with  the ability to work with several programs at the same time and  easily switch  between them without having to quit and restart individual  applications. (Retail  Price was US$99) Screenshots
December	1985	PC-DOS 3.2	OEM PC-DOS for IBM Corporation. ~ Support for 3.5" LD 720Kb Floppy Disks
>	1986	DOSPlus 2.0	Digital Research release DOSPlus 2.0 - Forerunner to DrDOS
>	1986	Dr GEM	Amstrad & KayPro bundle 'GEM' software with MS-DOS 3.1
April	1986	MS-DOS 3.2	First Retail Release of MS-DOS ~ Support for 3.5" LD 720Kb Floppy Disks
August	1986	Windows 1.03	Microsofts second release, - MS-DOS version 3.2 support added
January	1987	Windows DDL Volume 1	Microsoft Windows Device Driver Library Volume 1 Additional support for display devices, printers, and pointing devices added
April	1987	OS/2	Microsoft announces MicroSoft Operating System/2 (MS OS/2) a new personal  computer operating system. It has been designed and developed specifically to  harness the capabilities of personal computers based upon the Intel 80286 and  80386 microprocessors. This is the first product to be announced as a result of the  Joint  Development Agreement between IBM and Microsoft announced in August  1985.  -  Intended Replacement for MS-DOS
April	1987	Windows 1.04	- IBM Personal System/2 support added
April	1987	MS-DOS 3.21	OEM Version for Kaypro & Zenith Computer Corporations. (And others)
April	1987	MS-DOS 3.3	MS-DOS 3.3 introduces support for more than one logical drive per hard disk.  Logical drives are treated as completely separate disks under MS-DOS, even  though they may occupy the same physical hard disk. Plus 3.5" HD 1.44MB Floppy Disk Support + Real Time Support for the  'new' CMOS clock
April	1987	PC-DOS 3.3	OEM PC-DOS for IBM Corporation. Added support for PS/2 Computers
April	1987	MS OS/2 - 1.0	Microsoft & IBM OS/2 Version 1.0 Released Click here for OS/2 History, Sub-Versions and Resources
Mid	1987	DOSPlus 2.1	Digital Research release DOSPlus 2.1 - Last release before DrDOS 3.31
October	1987	MS LAN Manager	Microsoft releases LAN Manager, (Local Area Network) a LAN operating  system add-on that runs on both  MS-DOS and OS/2.
November	1987	Windows 2.0	Microsoft releases Microsoft Windows 2.03 (Retail Packaging however may show  it as Windows 2.0) offering compatibility with  existing  Windows applications and  a  new visual appearance compatible with Microsoft  OS/2 Presentation Manager.  In addition to the new visual appearance,  it uses a  system of overlapping  windows, rather than tiled windows. Windows  2.03 also includes significant  performance enhancements and improved support for expanded memory  hardware. Screenshots
>	1988	Windows/286	Version 2.03 ~ When Windows/386 was released, Microsoft renamed Windows  2.03 to Windows/286 (For the Intel 286) for version consistency, And labelled all  further production accordingly. However it was not replaced by Windows/386, As  both versions were aimed at different processors. Therefore Version 2.03 can be  found labelled under both descriptions.
February	1988	MS-DOS 3.3Plus	Extended MS-DOS for Selected OEMs
March	1988	MS-DOS 3.3T	Modified MS-DOS 3.3 for Tandy (Radio Shack) Computers as TandyDOS
April	1988	MS-DOS 3.31	Extended Version for Various OEM Manufactures.
May >	1988	DrDOS 3.3x	Digital Research release DrDOS 3.31 (No version 3.0  recorded) followed  by a series of OEM  versions.  3.32, 3.33, 3.34, 3.35, 3.40, 3.41 & 3.42  Some releases include a version of GEM Desktop (Called ViewMAX)
July	1988	MS-DOS 4.0	This version provided XMS support, support for partitions on hard disks up to  2.10  GB and a graphical shell. ~ It also contained a large number of bugs and  many  programs refused to run on it.
July	1988	PC-DOS 4.0	OEM PC-DOS for IBM Corporation. (IBM buy rights to future versions of PC-DOS)
August	1988	Windows/286	Version 2.10 ~ Intel 286 Optimised Edition
August	1988	Windows/386	Version 2.10 ~ Intel 386 Optimised Edition (Introduces HIMEM.SYS Driver)
October	1988	MS OS/2 1.10	Microsoft and IBM announce the delivery of the jointly developed  Operating  System/2 (OS/2) 1.1 with Presentation Manager. Presentation Manager  is the  graphical user interface (GUI) for the OS/2 operating system. This is the  second  major release of the Standard Edition of OS/2. (LAN version also released)
November	1988	MS-DOS 4.01	Major Bug Fix for MS-DOS 4.0 (Core Files almost completely rewritten)
November	1988	PC-DOS 4.01	Major Bug Fix for PC-DOS 4.0
December	1988	DrDOS 4.41	Digital Research release DrDOS 4.41 (No Version 4.0 released!)
March	1989	Windows/286	Version 2.11 ~ Intel 286 Optimised Edition
March	1989	Windows/386	Version 2.11 ~ Intel 386 Optimised Edition
April	1989	MS-DOS 4.01a	Minor update to MS-DOS 4.01 to include better support as Larger Hard Drives  become available. A File Update is also released to support MS-DOS 4.01
April	1989	Dr GEM 3.13	Last retail release of GEM by Digital Research
April	1989	MS OS/2 - 1.10EE	Microsoft and IBM OS/2 1.10 Extended Edition released, with LAN Manager.
June	1989	IBM OS/2 - 1.20	IBM OS/2 1.20 released.
May	1990	Windows 3.0	Microsoft announces the immediate, worldwide availability of Microsoft Windows  3.0, This version offers dramatic performance increases for Windows  applications, advances in ease of use and  aesthetic appeal, and straightforward  integration into corporate computing  environments Network Drivers also made  available.  Screenshots IBM start to offer Windows 3.0 as a PS/2 Option
May	1990	DrDOS 5.0	Digital Research release DrDOS 5.0 - First Retail Version
September	1990		IBM and Microsoft agree to end their development relationship.
April	1991	IBM OS/2 - 1.30	IBM OS/2 1.30 released.
October	1991	Windows 3.0a	Maintenance Release of Windows 3.0 focusing on specific problems
April	1991	MS-DOS 5.0	This was a major upgrade. It allowed parts of DOS to load itself in the high  memory area and certain device drivers and TSRs to run in the unused parts of the  upper memory area between 640K and 1024K. This version also added support  for IBM's new 2.88 MB floppy disks. An improved BASIC interpreter and text  editor were included, as was a disk cache, an undelete utility and a Hard Disk  partition-table backup program . After the problems with MS-DOS 4, it also  provided a utility to make programs think they were running on a different version  of MS-DOS.(SETVER) ~ Restores confidence in DOS after  v4.x  disaster.
June	1991	DrDOS 6.0	Digital Research release DrDOS 6.0 Adds disk compression, disk optimizer, etc.
June	1991	PC-DOS 5.0	IBM PC-DOS 5.0
June	1991	MS-DOS 5UG	MS-DOS 5.0 Upgrade Edition for all earler versions (First Upgrade Version)
October	1991	Windows 3.0 with Multimedia Extensions Version 1.0	OEM Windows 3.0 with MultiMedia Extensions v1.0. This version of Windows  was probably a standard version of Windows 3.0a and Microsoft Multimedia  Extensions Version 1.0 being  released as an OEM Multimedia CD-ROM only.  IBM list Windows 3.0 MM as an option for PS/2 Computers
Notes	1991	Tandy Modular Windows	Tandy Modular Windows was an OEM Special GUI for Tandy Corp.'s Video  Information System (VIS) Multimedia Player. It was essentially a Windows 3.0  Core Program, But  without any Microsoft Desktop Accessories, Drivers, or a  number of other features. (Not to be confused with Windows 3.0 MultiMedia)
Q3	1991	Windows NT Program	New Technology Development Program - NT Operating System was first  intended to be based on OS/2 Technology but was later changed to Windows
Q4	1991	MS-DOS 5.Oa	This was a minor update for MS-DOS 5.0 which dealt with possibly catastrophic  problems with UNDELETE and CHKDSK. A File Update  is also released
Q4	1991	MS-DOS 5aUG	Replaces MS-DOS 5.0 Upgrade (Details as for MS-DOS 5.0a)
February	1992	PC-DOS 5.0.1	PC-DOS 5.0 Rev 1 (Possibly an update for same reason as MS-DOS 5.0a)
April	1992	Windows 3.1	Microsoft ships Microsoft Windows 3.1 with over 1,000 enhancements. The new  version created unprecedented user demand with over one million advance orders  placed worldwide. ~ 386 Enhanced Mode with minimum 4MB RAM - Operates  in Standard Mode with 2MBs - Added support for Truetype Fonts  Screenshots
April	1992	Win 3.1UG	Windows 3.1 Upgrade for Windows 3.0 Users. (Full Version marked Upgrade!)
June	1992	IBM OS/2 - 2.0	IBM OS/2 version 2.0 released. (Microsoft withdraws support for OS/2)
September	1992	PC-DOS 5.0.2	C-DOS 5.0 Rev 2 - To correct errors with Windows 3.1 (EMM386.EXE)
October	1992	Windows for Workgroups 3.1 (WfWG 3.1)	Microsoft announces the worldwide availability of Microsoft Windows for  WorkGroups 3.1 (WfWG) which integrates networking and workgroup  functionality  directly  into Windows 3.1. The product allows common activities of  sending  electronic  mail, scheduling group meetings, sharing files and printers,  managing  calendars, and  working together on groups projects. It can provide  networking  capabilities on its  own, or it can be used as a client on an existing  local area  network. Screenshots (Unlike NT, WfWG is still a MS-DOS GUI)
October	1992	WfWG31AD	Windows for Workgroups 3.1 Add-On for MS-DOS Users
October	1992	WfWG31AW	WfWG 3.1 Add-On for Windows Users - This package is for machines that  already  have Windows version 3.1 installed. It upgrades Windows by  adding  those files required for the new features  of WfWG 3.1 (Uses Compliance Checking)
Q4	1992	WindowsNT BETA	Windows New Technology - First BETA Testing of Windows NT ~ Microsofts  first true 32bit Operating System.
March	1993	MS-DOS 6.0	This was a catch-up with Novell's DR-DOS 6. It added a disk-compression utility  called DoubleSpace, a basic anti-virus program and a disk defragmenter. It also  finally included a MOVE command, an improved backup program, MSBACKUP  and multiple boot configurations. Memory management was also improved by the  addition of MEMMAKER. A number of older utilities, such as JOIN and  RECOVER were removed. However DOSSHELLwas still included.
March	1993	MS-DOS6UG	MS-DOS 6.0 Upgrade Edition for all earler versions from 3.3 onwards.
March	1993	6.0 Supplemental	Microsoft released a Supplemental Update of Earler Files removed from v6.0
May	1993	Windows for PEN  Computing 3.1	Microsofts first attempt at a GUI for Palm and Organiser type small computers. It  used a cut down version of MS-DOS 6.0 & Windows 3.1 with a PEN Driver Set.
Note	1993	Dr PalmDOS	Digital Research base their PalmDOS on CP/M with GEM ViewMAX
June	1993	PC-DOS 6.1	IBM starts to number PC-DOS in series with MS-DOS
Q3	1993	NovellDOS 7.0	DrDOS sold to Novell who release it as NovellDOS 7.0 with NetWare
July	1993	WindowsNT 3.1	Windows NT - Designed for Business & Networking Use - Not dependent on  MS-DOS - Uses its own NTFS Bootstrap to install. (Released on 3.5" Disks)   Link Site Abandoned - New Screenshots to Follow
>	>	Windows NT Service Packs	After the release of NT 3.1 Microsoft began a series of Service Pack Releases,  which included Updates, Patchs as well as New or Updated Network Drivers. The Last  known Service Pack for Windows NT 3.1 was SP-3 (Dated October 1994)
November	1993	MS-DOS 6.2	Extra security was built into DoubleSpace following complaints of data loss.  A  new disk checker, SCANDISK, was also introduced, as well as improvements to  DISKCOPY and SmartDrive (DOSSHELL was removed to the Supplemental Disk Set)
November	1993	MS-DOS62UG	MS-DOS 6.2 Upgrade Edition for all earler versions from 3.3 onwards.
November	1993	MS-DOS62SU	MS-DOS 6.2 Step-Up for 6.0 Users Only (MS-DOS Step-Up differs from  Upgrade in that it is limited to earler 6x versions only and contains file updates not  complete copies of application files other than IO.SYS & MSDOS.SYS)
November	1993	6.2 Supplemental	Microsoft released a Supplemental Update of Earler Files removed from v 6.2  Including DOSSHELL which was removed from 6.2 & later versions.
December	1993	Windows for Workgroups 3.11 (WfWG 3.11)	WfWG 3.11 contains the complete software package for machines that do not  have Windows Operating System version 3.0 or 3.1. It contains all the WfWG  software, including Windows 3.1 functionality, file sharing, printer sharing,  network dynamic data exchange (DDE),  Microsoft Mail, Microsoft Schedule+,  Microsoft At Work PC Fax, Remote Access Services, 32-bit file and disk  access, and advanced security. Screenshots
December	1993	WfWG311AD	WfWG 3.11 Add-On for MS-DOS Users.
December	1993	WfWG311AW	WfWG 3.11 Add-On for Windows Users -This package is for machines that  already have Windows or WfWG version 3.1 installed. It  upgrades Windows or  WfWG 3.1 by adding those files required for the new features of WfWG 3.11.
December	1993	MSClient 3.0	Microsoft Client for MS-DOS version 3.0 (Network Add-On for MS-DOS)
December	1993	Windows 3.11	With WfWG Compatable Core Files, SVGA & updated drivers Screenshots Windows 3.11 was never marketed as such, It is a Service Release of Windows  3.1 only - The only way to check you have it was to click the 'About' Box
December	1993	Win31 Updates	Microsoft also made available 2 updates for Windows 3.1 to bring it upto  Windows 3.11 standard ~ 3.11 Core Files and SVGA Driver Updates.
December	1993	PC-DOS 6.3	Replaces PC-DOS 6.1
Q1	1994	MS-DOS 7.0 BETA 1	Work starts on a Enhanced version of MS-DOS for 32bit Windows. At first  based on MS-DOS 6.2 with DoubleSpace but later changed due to legal action.
March	1994	MS-DOS 6.21	Following legal action by Stac Electronics, Microsoft released this interim version  which had DoubleSpace removed This was an interim limited release of  MS-DOS  until  replacement of DoubleSpace ~ Otherwise identical in function to  MS-DOS 6.2
March	1994	MS-DOS621UG	MS-DOS 6.21 Upgrade Edition for all earlier versions (No Step-Up Released)
March	1994	6.21 Supplemental	Microsoft released a Supplemental Update of Earlier Files removed from v6.21
March	1994	Win32s for Windows 3.1	Win32s is a set of runtime libraries for Windows 3.1, which enable users to run  most Windows NT 32-bit applications on Windows 3.1, without the extensive  hardware requirements of Windows NT.
April	1994	MS-DOS 6.22	Microsoft licensed a disk-compression package called DoubleDisk from  VertiSoft  Systems and renamed it DriveSpace, which was included in this  version. (Other than disk-compression there is no difference to MS-DOS 6.2)
April	1994	MS-DOS622UG	MS-DOS 6.22 Upgrade Edition for all earler versions from 3.3 onwards.
April	1994	MS-DOS6.22SU	MS-DOS 6.22 Step-Up for 6.0, 6.2, 6.21 Users Only
April	1994	6.22 Supplemental	Microsoft released a Supplemental Update of Earler Files removed from v6.22
May	1994	MS-DOS 7.0 BETA 2	Second BETA of WindowsDOS now based on DriveSpace Technology.
September	1994	Chicago	Microsoft announces that Microsoft Windows 95 is the official name for the next  version of Windows, code-named "Chicago." This name was chosen to make it  easier for customers to identify the most current version of Microsoft Windows. It  is a fully integrated 32-bit operating system replacing Windows 3.11, Windows  for  Workgroups 3.11, and MS-DOS as the mainstream desktop operating  system. Windows 4.0 (95) uses a version of MS-DOS to 'Bootup' (MS-DOS 7.0)
September	1994	WindowsNT 3.5	Windows New Technology 3.5
>	>	NT Service Packs	No recorded Service Pack was published for NT 3.5
November	1994	OS/2 Warp 3.0	IBM OS/2 Warp 3.0 released
August	1995	Windows 95 OEM	OEM (Pre-Installed) 32bit Processing - Long Filename Support & other major  improvements over Windows 3.x (Still uses original FAT16) DriveSpace Included  Windows 95 supports two new partition types (0E and 0F) to support the logical  block addressing (LBA) INT13h extensions as specified in the Windows 95  Driver Development Kit (DDK).~ Includes Internet Explorer 1.0
August	1995	Windows 95	Retail Windows 95 for Computers without MS-DOS (or earlier MS-DOS Version)  Link Site Abandoned - New Screenshots to Follow
August	1995	Integral MS-DOS 7.0	MS-DOS 7.0 (Also called WindowsDOS) is an integral part of Windows 95. (It and later versions are NOT available as a Stand-Alone OS) It provides support for  Long  Filenames only  when Windows is running, but  removes a large number of  other utilities,  some of  which are on the Windows  95 CD versions in the otheroldmsdos directory. (Reports itself as Windows 95)
August	1995	Win95UG	Windows 95 Upgrade for Previous Versions of Windows
August	1995	Educational Pack	Discounted Combined Win95 & NT4.0 for Teachers & Students Only.
August	1995	Win95 PlusPack	Extras for Win95 such as DriveSpace 3, MS Themes and 3D Pinball Game
August	1995	Win95 CD-ROM Extras & Updates	Microsoft release Extra Applications found on 95 CD for Floppy Disk Users.  (This MS page has changed now to the equivalent of 'WindowsUpdate')
September	1995	Win95 - DOS 7.0 Supplemental	Microsoft release a Supplemental Update of MS-DOS 6.22 Files removed from  Win95 Called OLDDOS.EXE ~ Microsoft still find it difficult to 'Kill' DOS
September	1995	WindowsNT 3.51	Updated Release of NT 3.5 with additional network drivers Link Site Abandoned - New Screenshots to Follow
>	>	NT ServicePacks	The Last  Service Pack for Windows NT 3.51 was SP- 5 (Dated October 1996)
>	1995	Nashville	Windows 95 OSR (OEM Service Release) Update Program
>	1995	Cairo	Windows NT (4.0) 'Future Technology' BETA Program. (Also reported as Detroit)
>	1995	Pegasus	Windows CE (Compact Edition) Development Program - Based on Windows  95  and designed for the Handheld PC  (H/PC) and Portable PC (P/PC) also  known  as Personal Digital Assistants (PDA) ~ The Windows CE series is  included  to complete the Windows Range.
February	1996	Windows 95A	OSR 1.0 (As with later sub-versions of OSRs - Pre-Installed) IE 2.0 Included.
February	1996	Win95 SP1	Service Pack 1 for Windows 95 (95A Upgrade) This was the only Windows 9x  Service Pack, After this MS placed further updates on internet 'WindowsUpdate' Web Site.
August	1996	WindowsNT 4.0	Microsofts (Cairo) 32bit Muli-Tasking Operating System. Available in Server,  Desktop and Upgrade Versions. (Development continues for Option & Enterprise) Link Site Abandoned - New Screenshots to Follow
>	>	NT ServicePacks	The Latest Service Pack for NT 4.0 is SP - 6a (Dated December 1999)
August	1996	OS/2 Warp 4.0	IBM OS/2 Warp 4.0 released
September	1996	Windows 95B	OSR 2.0 (Mainly a Floppy Disk Release) - Windows 95 OSR 2 onwards support  two new partition types (0B and 0C) to support the FAT32 file system.  Maximum  partition size now 2 TeraBytes (TB) But still 2.1 GBs if is FAT16  selected.
September	1996	Windows 95B CD	OSR 2.1 with added USB Support (CD-ROM Versions Only) IE 3.0 Included.
September	1996	Integral MS-DOS 7.10	Updated  MS-DOS 7.10 is an integral part of OSR 2 and later versions of  Windows. The main change is support for FAT 32, a  more efficient and robust  way of  storing Data on Large Hard Disks. ('Large Disk Support' is an Option in  FDISK)
November	1996	WindowsCE 1.0	Pegasus ~ All versions of Windows CE are OEM releases only.
Late	1996	Windows NT5	Windows NT 5.0 Development Program. Windows NT Background & History
April	1997	PC-DOS 7.0	PC-DOS 7.0 Revsion 0 - Update available to Revsion 1 (PC-DOS 2000) from IBM
September	1997	NT5 BETA	Windows NT 5.0 BETA Program. Click here for NT5/2000 Build TimeLine
November	1997	Windows 95C	OSR 2.5 with Integrated Internet Explorer 4.0 (Improved USB Support) Some  issues of 95B/C Install CD-ROMs were 'Bootable' Dependent on BIOS Support.
November	1997	WindowsCE 2.0	Mercury ~ Successor to Windows CE 1
November	1997	OpenDOS 7.01	DrDOS sold to Caldera who release it as Caldera OpenDOS 7.01
December	1997	WinNT 4.0 OP	NT 4.0 Option Pack
December	1997	WinNT 4.0 Ent	NT 4.0 Enterprise Version
>	1997	Memphis	Windows 98 BETA Program
February	1998	DR-DOS 7.02	Caldera release OpenDOS 7.02 (Then rename it as DR-DOS 7.02)
April	1998	PC-DOS 2000	PC-DOS 7.0 Revsion 1 - Fully Y2K Compliant Update
Q2	1998	WindowsCE 2.01	Gryphon ~ First Microsoft P/PC OS
June	1998	Windows 98 OEM	OEM (Pre-Installed) With full FAT32 & USB Support and Integrated Internet  Explorer 4.0 (Install CD-ROM is now 'Bootable')
June	1998	Windows 98	Retail Windows 98 for Computers without MS-DOS Link Site Abandoned - New Screenshots to Follow
June	1998	Win98 UG	Windows 98 Upgrade for Previous Versions of Windows
June	1998	Educational Pack	Discounted Combined Win98 & NT4.0 for Teachers & Students Only.
June	1998	Win98 PlusPack	'Extras' that could have been included on 98 CD! (Say no more!)
July	1998	WindowsCE 2.1	Birch ~ P/PC Release
August	1998	NT5 BETA 2	Windows NT5 Beta 2 (Becomes Windows 2000 Beta 2)
Q3		Win CE 2.11 Pro	Jupiter ~ CE 2.11 Professional ~ H/PC Release
April	1999	Win2000 BETA 3	Windows 2000 Beta 3
Q2	1999	Neptune	Planned successor to Windows 98 (Cancelled Early 2000) See Whistler
Q2	1999	Odysee	Planned successor to Windows NT5 (2000) (Cancelled) See Whistler
May	1999	Win98 SP1	Service Pack 1 for Windows 98 (Major Bug Fixes plus IE 4.01 SP1)
May	1999	Windows 98SE OEM	OEM (Pre-Installed) Win98 Second Edition - Integrated Internet  Explorer 5.0
May	1999	Windows 98SE	Retail Windows 98SE for Computers without MS-DOS or Windows
May	1999	Win98SE UG	Windows 98SE Upgrade for Previous Versions of Windows
May	1999	Educational Pack	Discounted Combined Win98se & NT4.0 (SP-5) for Teachers &  Students Only.
July/August	1999	Millennium	Millennium Edition (WinMe) BETA Testing Program Still rallies on MS-DOS (No longer supports Real Mode)  (MS-DOS 8.0)
August	1999	DR-DOS 7.03	Caldera release DR-DOS 7.03 then transfer all rights to Lineo,  Corp
Q3	1999	WindowsCE 2.11	Wyvern ~ P/PC release
>	1999	WinMe BETA	Click here for the Full Windows Me TimeLine with Build Numbers.
End	1999	DR-DOS 7.04	Lineo release OEM version as DR-DOS 7.04
Early	2000	DR-DOS 7.05 BETA	Lineo BETA Test OEM DR-DOS 7.05 but then discontinue DR-DOS  development.
Q1	2000	Whistler	Planned future merge of Windows 98, Millennium and NT(2000) into 1 OS
February	2000	Windows 2000 Professional	Windows 2000 Professional (NT & Network Users) NO MS-DOS Support  Successor to Windows NT 4.0 - Designed for Business Use. Available in Server,  Desktop and Upgrade Versions.
>	>	NT Service Packs	The Latest Service Pack for Windows 2000 is SP-2 Dated May 2001
May	2000	WindowsCE 3.0	For Microsoft's Pocket PC Handheld Devices. A Major Revamp! 2 code-names  have been reported = Rapier for P/PC 2000 and Galileo for H/PC 2000
August	2000	Windows Me OEM	OEM (Pre-Installed) For Home Users with Integrated Internet Explorer  &  Outlook Express 5.5 and MSN Messenger - Gold Release 4.10.3000 (ME as in Millennium Edition or Me as in I myself ?)
September	2000	Windows Me	Retail for Computers without MS-DOS or Windows Link Site Abandoned - New Screenshots to Follow
September	2000	Integral MS-DOS 8.0	Major change to MS-DOS 8.0 is the removal of 'Real-Mode' Support. Other  than  that it is identical to MS-DOS 7.10 (This is done by changes to IO.SYS &  COMMAND.COM)
September	2000	WinMe Step-Up	Limited Promotional Step-Up Version for Windows 98/98se Users Only
September	2000	WinMe UG	Windows Millennium Upgrade for Previous Versions of Windows (Not 3.x)
April	2001	WindowsCE	Talisker Microsoft Announces Beta 1 of "Talisker," the Next Version of Windows CE  http://www.microsoft.com/PressPass/press/2001/Apr01/04-10TaliskerPR.asp
>>>>>>>	2001		Windows XP is the release name for Windows Whistler and was released on  October 25 2001 Due to the large number of 'Builds' it has not been  possible to  keep  listing them! - Read - http://www.winsupersite.com/reviews/windowsxp_gold.asp
????????	2002		Now that Windows no longer uses a MS-DOS loader or supports it in  any way. It is time to close the DOS Timeline. I enjoyed doing  it, but  now is the time to STOP. For New and Breaking News on  Windows  and its Future visit http://www.winsupersite.com/default.asp