==Brief DOS History== * 1973: Gary Kildall writes a simple operating system which he calls CP/M * April 1980: Tim Paterson begins writing an operating system for use with Seattle Computer Products' 8086-based computer, due to delays by Digital Research in releasing their CP/M-86 operating system. * August 1980: QDOS 0.10 (Quick and Dirty Operating System) is shipped by Seattle Computer Products. * October 1980: Microsoft pays less than US$100,000 for the right to sell SCP's DOS to an unnamed client (IBM). * December 1980: Microsoft buys non-exclusive rights to market QDOS. * December 1980: Digital Research releases CP/M-86 * July 1981: Microsoft buys all rights to QDOS from Seattle Computer Products, and the name MS-DOS is adopted. * August 1981: IBM announces the IBM 5150 PC Personal Computer, featuring a 4.77-MHz Intel 8088 CPU, 64KB RAM, 40KB ROM, one 5.25-inch floppy drive, and PC-DOS 1.0 * May 1982: Microsoft releases MS-DOS 1.1 * March 1983: MS-DOS 2.0 for PCs is announced. * October 1983: IBM introduces PC-DOS 2.1 * March 1984: Microsoft releases MS-DOS 2.1 * August 1984: Microsoft releases MS-DOS 3.0. It adds support for 1.2 MB floppy disks, and bigger than 10 MB hard disks. * November 1984: Microsoft releases MS-DOS 3.1 * January 1986: Microsoft releases MS-DOS 3.2. It adds support for 3.5-inch 720 KB floppy disk drives. * August 1987: Microsoft ships MS-DOS 3.3. * November 1987: Compaq ships Compaq MS-DOS 3.31 with support for hard disk partitions over 32 MB. * January 1988: Digital Research transforms CP/M into DR-DOS. * May 1988: Digital research releases DR-DOS 3.31, supporting hard disk partitions up to 512 MB. * June 1988: Microsoft releases MS-DOS 4.0, including a graphical/mouse interface. * July 1988: IBM ships PC-DOS 4.0. It adds a shell menu interface and support for hard disk partitions over 32 MB. * 1989: ROM-DOS introduced by Datalight. * May 1990: Digital Research releases DR-DOS 5.0. * June 1991: Microsoft releases MS-DOS 5.0. Edlin is replaced with a full-screen editor. It adds undelete and unformat utilities, and task swapping. GW-BASIC is replaced with QBasic_programming_language. * September 1991: Digital Research releases DR-DOS 6.0 with Superstore disk compression. * March 1993: Microsoft introduces MS-DOS 6.0, including DoubleSpace disk compression. * April 1993: Novell acquires Digital Research * November 1993: Microsoft releases MS-DOS 6.2. * December 1993: Novell releases Novell DOS 7.0. * February 1994: Microsoft releases MS-DOS 6.21, removing DoubleSpace disk compression. * April 1994: IBM releases PC-DOS 6.3. * June 1994: Microsoft releases MS-DOS 6.22, bringing back disk compression under the name DriveSpace. * June 1994: PD-DOS, the open-source project later known as FreeDOS, is announced. * April 1995: IBM releases PC-DOS 7, with integrated data compression from Stac Electronics (Stacker). * July 1995: PTS-DOS 7.0 is released. * January 1997: Novell sells Novell DOS to Caldera Systems, who release it as open-source OpenDOS 7.01 * December 1997: Caldera releases OpenDOS 7.02 as closed-source software. * April 1998: IBM releases PC-DOS 7.1 (aka PC-DOS 2000), which is Y2K compliant. * June 1999: Caldera Systems sells OpenDOS to Lineo, who release it as DR-DOS 7.03. * September 1999: PTS-DOS 2000 is released. * December 1999: Lineo releases an OEM-only version of DR-DOS 7.04. * January 2000: Lineo releases DR-DOS 7.05 beta but soon drops development on it. * July 2002: Udo Kuhnt starts the DR-DOS/OpenDOS Enhancement Project, based on the opensource OpenDos 7.01. * October 2002: Lineo sells DR-DOS to DeviceLogics. * March 2004: DeviceLogics releases DR-DOS 8.0 * November 2004: FreeDOS beta 0.9 is released. * June 2005: GNU/DOS is released == Historical and licensing information == {| border="1" cellpadding="1" cellspacing="0" style="font-size: 85%; border: gray solid 1px; border-collapse: collapse; text-align: center; width: 100%" |- style="background: #ececec;" !style="background: #ececec;"|Name !style="background: #ececec;"|Creator !style="background: #ececec;"|Current code owner/maintainer !style="background: #ececec;"|License !style="background: #ececec;"|First public release date |- !style="background: #ececec;"| MS-DOS 1.1 | Microsoft | No longer supported | Proprietary_software | 1982 |- !style="background: #ececec;"| MS-DOS 3.0 | Microsoft | No longer supported | Proprietary | 1984 |- !style="background: #ececec;"| MS-DOS 3.2 | Microsoft | No longer supported | Proprietary | 1986 |- !style="background: #ececec;"| MS-DOS 3.3 | Microsoft | No longer supported | Proprietary | 1987 |- !style="background: #ececec;"| MS-DOS 4.0 | Microsoft | No longer supported | Proprietary | 1988 |- !style="background: #ececec;"| MS-DOS 6.0 | Microsoft | No longer supported | Proprietary | 1994 |- !style="background: #ececec;"| MS-DOS 6.22 | Microsoft | No longer supported | Proprietary | 1994 |- !style="background: #ececec;"| MS-DOS 7.0 (Microsoft_Windows 95A) | Microsoft | No longer supported | Proprietary | 1995 |- !style="background: #ececec;"| MS-DOS 7.1x (Windows 95B/OSR2, 95C/OSR2.5, 98, and 98SE) | Microsoft | No longer supported | Proprietary | 1996 |- !style="background: #ececec;"| MS-DOS 8.0 (Windows ME) | Microsoft | No longer supported | Proprietary | 2000 |- !style="background: #ececec;"| DR-DOS 6.0 | Digital_Research | No longer supported | Proprietary | 1991 |- !style="background: #ececec;"| DR-DOS 7.03 | Lineo | DeviceLogics | Proprietary | 1999 |- !style="background: #ececec;"| DR-DOS 8.0 | DeviceLogics | DeviceLogics | Proprietary | 2004 |- !style="background: #ececec;"| FreeDOS beta 0.9 | [http://www.freedos.org/ Bernd Blaau] | Bernd Blaau | Open_source | 1994 |- !style="background: #ececec;"| Novell DOS 7.0 | Novell | No longer supported | Proprietary | 1993 |- !style="background: #ececec;"| OpenDOS 7.01 | Caldera_Systems | Udo_Kuhnt? | Open Source | 1997 |- !style="background: #ececec;"| PC-DOS 1.0 | IBM | No longer supported | Proprietary | 1981 |- !style="background: #ececec;"| PC-DOS 7.x / 2000 | IBM | IBM | Proprietary | 1995 |- !style="background: #ececec;"| PTS-DOS 32 | [http://www.phystechsoft.com/ptsdos/products.php?page=4 PhysTechSoft] | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| PTS-DOS 2000 | PhysTechSoft | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| PTS-DOS 2000 PRO | PhysTechSoft | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| ROM-DOS | [http://www.datalight.com Datalight] | Datalight | Proprietary | ? |- |} == Technical specifications == {| border="1" cellpadding="1" cellspacing="0" style="font-size: 85%; border: gray solid 1px; border-collapse: collapse; text-align: center; width: 100%" |- style="background: #ececec;" !style="background: #ececec;"|Name !style="background: #ececec;"|Max Hard_Drive partition size !style="background: #ececec;"| File_system supported natively !style="background: #ececec;"|3.5" Floppy capacities supported natively !style="background: #ececec;"|5.25" Floppy capacities supported natively !style="background: #ececec;"|Integrated disk compression utility? !style="background: #ececec;"|Long File Names supported natively? |- !style="background: #ececec;"| MS-DOS 1.1 | n/a | File Allocation Table | n/a | 360kB | No | No |- !style="background: #ececec;"| MS-DOS 3.0 | 32MB | FAT12 | n/a | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 3.2 | 32MB | FAT12 | 720kB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 3.3 | 32MB | FAT12 | 720kB, 1.44MB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 4.0 | 2GB | FAT12, File Allocation Table | 720kB, 1.44MB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 6.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | Doublespace | No |- !style="background: #ececec;"| MS-DOS 6.22 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | DriveSpace | No |- !style="background: #ececec;"| MS-DOS 7.0 (Microsoft_Windows 95A) | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| MS-DOS 7.1x (Windows 95B/OSR2, 95C/OSR2.5, 98, and 98SE) | 124.55GB (with FAT32) | FAT12, FAT16, File Allocation Table | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| MS-DOS 8.0 (Windows ME) | 124.55GB (with FAT32) | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| DR-DOS 6.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | Superstore | No |- !style="background: #ececec;"| DR-DOS 7.03 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| DR-DOS 8.0 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| FreeDOS beta 0.9 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| Novell DOS 7.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| OpenDOS 7.01 | 2GB | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| PC-DOS 1.0 | n/a | FAT12 | n/a | 360kB | No | No |- !style="background: #ececec;"| PC-DOS 7.x / 2000 | 2GB | FAT12, FAT16 | 720kB, 1.44MB,
1.86MB (IBM_Extended_Density_Format), 2.88MB | 360kB, 1.2MB,
1.54MB (XDF) | Stacker | No |- !style="background: #ececec;"| PTS-DOS 32 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| PTS-DOS 2000 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| PTS-DOS 2000 PRO | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| ROM-DOS | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- |} == Notes == Current understanding has it that if one has a license to run a Windows version, one can also legally install any MS-DOS version up to the level of that Windows' version. MS-DOS 8.0 has most of the functionality of previous versions, but there are significant losses of usability, like: the loss of FORMAT /S command; loss of SYS A: (or SYS B:) command for floppies; inability to boot to a command prompt without substitution/modification of IO.SYS and COMMAND.COM. The limit of 124.55GB for FAT32 partition size is a limitation of Microsoft's SCANDISK utility. [http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q184006& Microsoft's KB article 184006]. Other DOS versions supporting FAT32 may allow a larger partition size closer to the theoretical ~2TB maximum suggested by FAT32's specifications. While Windows ME may be unsupported and end-of-life, a version of its underlying DOS is included with Windows XP. When one formats a floppy in Windows XP and selects "Create an MS-DOS startup disk", the floppy is formatted with a DOS version that identifies itself as "Windows Millenium [Version 4.90.3000]". == See also == * CP/M * DR-DOS * GNU/DOS * MS-DOS * PC-DOS == External link == [http://www.oldfiles.org.uk/powerload/timeline.htm Detailed timeline of DOS variants] DOS on IBM PC compatibles Software comparison
See other meanings of words starting from letter:
Words begining with X86_DOS_Comparison:
X86_DOS_Comparison
X86 DOS Comparison
==Brief DOS History== * 1973: Gary Kildall writes a simple operating system which he calls CP/M * April 1980: Tim Paterson begins writing an operating system for use with Seattle Computer Products' 8086-based computer, due to delays by Digital Research in releasing their CP/M-86 operating system. * August 1980: QDOS 0.10 (Quick and Dirty Operating System) is shipped by Seattle Computer Products. * October 1980: Microsoft pays less than US$100,000 for the right to sell SCP's DOS to an unnamed client (IBM). * December 1980: Microsoft buys non-exclusive rights to market QDOS. * December 1980: Digital Research releases CP/M-86 * July 1981: Microsoft buys all rights to QDOS from Seattle Computer Products, and the name MS-DOS is adopted. * August 1981: IBM announces the IBM 5150 PC Personal Computer, featuring a 4.77-MHz Intel 8088 CPU, 64KB RAM, 40KB ROM, one 5.25-inch floppy drive, and PC-DOS 1.0 * May 1982: Microsoft releases MS-DOS 1.1 * March 1983: MS-DOS 2.0 for PCs is announced. * October 1983: IBM introduces PC-DOS 2.1 * March 1984: Microsoft releases MS-DOS 2.1 * August 1984: Microsoft releases MS-DOS 3.0. It adds support for 1.2 MB floppy disks, and bigger than 10 MB hard disks. * November 1984: Microsoft releases MS-DOS 3.1 * January 1986: Microsoft releases MS-DOS 3.2. It adds support for 3.5-inch 720 KB floppy disk drives. * August 1987: Microsoft ships MS-DOS 3.3. * November 1987: Compaq ships Compaq MS-DOS 3.31 with support for hard disk partitions over 32 MB. * January 1988: Digital Research transforms CP/M into DR-DOS. * May 1988: Digital research releases DR-DOS 3.31, supporting hard disk partitions up to 512 MB. * June 1988: Microsoft releases MS-DOS 4.0, including a graphical/mouse interface. * July 1988: IBM ships PC-DOS 4.0. It adds a shell menu interface and support for hard disk partitions over 32 MB. * 1989: ROM-DOS introduced by Datalight. * May 1990: Digital Research releases DR-DOS 5.0. * June 1991: Microsoft releases MS-DOS 5.0. Edlin is replaced with a full-screen editor. It adds undelete and unformat utilities, and task swapping. GW-BASIC is replaced with QBasic_programming_language. * September 1991: Digital Research releases DR-DOS 6.0 with Superstore disk compression. * March 1993: Microsoft introduces MS-DOS 6.0, including DoubleSpace disk compression. * April 1993: Novell acquires Digital Research * November 1993: Microsoft releases MS-DOS 6.2. * December 1993: Novell releases Novell DOS 7.0. * February 1994: Microsoft releases MS-DOS 6.21, removing DoubleSpace disk compression. * April 1994: IBM releases PC-DOS 6.3. * June 1994: Microsoft releases MS-DOS 6.22, bringing back disk compression under the name DriveSpace. * June 1994: PD-DOS, the open-source project later known as FreeDOS, is announced. * April 1995: IBM releases PC-DOS 7, with integrated data compression from Stac Electronics (Stacker). * July 1995: PTS-DOS 7.0 is released. * January 1997: Novell sells Novell DOS to Caldera Systems, who release it as open-source OpenDOS 7.01 * December 1997: Caldera releases OpenDOS 7.02 as closed-source software. * April 1998: IBM releases PC-DOS 7.1 (aka PC-DOS 2000), which is Y2K compliant. * June 1999: Caldera Systems sells OpenDOS to Lineo, who release it as DR-DOS 7.03. * September 1999: PTS-DOS 2000 is released. * December 1999: Lineo releases an OEM-only version of DR-DOS 7.04. * January 2000: Lineo releases DR-DOS 7.05 beta but soon drops development on it. * July 2002: Udo Kuhnt starts the DR-DOS/OpenDOS Enhancement Project, based on the opensource OpenDos 7.01. * October 2002: Lineo sells DR-DOS to DeviceLogics. * March 2004: DeviceLogics releases DR-DOS 8.0 * November 2004: FreeDOS beta 0.9 is released. * June 2005: GNU/DOS is released == Historical and licensing information == {| border="1" cellpadding="1" cellspacing="0" style="font-size: 85%; border: gray solid 1px; border-collapse: collapse; text-align: center; width: 100%" |- style="background: #ececec;" !style="background: #ececec;"|Name !style="background: #ececec;"|Creator !style="background: #ececec;"|Current code owner/maintainer !style="background: #ececec;"|License !style="background: #ececec;"|First public release date |- !style="background: #ececec;"| MS-DOS 1.1 | Microsoft | No longer supported | Proprietary_software | 1982 |- !style="background: #ececec;"| MS-DOS 3.0 | Microsoft | No longer supported | Proprietary | 1984 |- !style="background: #ececec;"| MS-DOS 3.2 | Microsoft | No longer supported | Proprietary | 1986 |- !style="background: #ececec;"| MS-DOS 3.3 | Microsoft | No longer supported | Proprietary | 1987 |- !style="background: #ececec;"| MS-DOS 4.0 | Microsoft | No longer supported | Proprietary | 1988 |- !style="background: #ececec;"| MS-DOS 6.0 | Microsoft | No longer supported | Proprietary | 1994 |- !style="background: #ececec;"| MS-DOS 6.22 | Microsoft | No longer supported | Proprietary | 1994 |- !style="background: #ececec;"| MS-DOS 7.0 (Microsoft_Windows 95A) | Microsoft | No longer supported | Proprietary | 1995 |- !style="background: #ececec;"| MS-DOS 7.1x (Windows 95B/OSR2, 95C/OSR2.5, 98, and 98SE) | Microsoft | No longer supported | Proprietary | 1996 |- !style="background: #ececec;"| MS-DOS 8.0 (Windows ME) | Microsoft | No longer supported | Proprietary | 2000 |- !style="background: #ececec;"| DR-DOS 6.0 | Digital_Research | No longer supported | Proprietary | 1991 |- !style="background: #ececec;"| DR-DOS 7.03 | Lineo | DeviceLogics | Proprietary | 1999 |- !style="background: #ececec;"| DR-DOS 8.0 | DeviceLogics | DeviceLogics | Proprietary | 2004 |- !style="background: #ececec;"| FreeDOS beta 0.9 | [http://www.freedos.org/ Bernd Blaau] | Bernd Blaau | Open_source | 1994 |- !style="background: #ececec;"| Novell DOS 7.0 | Novell | No longer supported | Proprietary | 1993 |- !style="background: #ececec;"| OpenDOS 7.01 | Caldera_Systems | Udo_Kuhnt? | Open Source | 1997 |- !style="background: #ececec;"| PC-DOS 1.0 | IBM | No longer supported | Proprietary | 1981 |- !style="background: #ececec;"| PC-DOS 7.x / 2000 | IBM | IBM | Proprietary | 1995 |- !style="background: #ececec;"| PTS-DOS 32 | [http://www.phystechsoft.com/ptsdos/products.php?page=4 PhysTechSoft] | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| PTS-DOS 2000 | PhysTechSoft | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| PTS-DOS 2000 PRO | PhysTechSoft | PhysTechSoft | Proprietary | ? |- !style="background: #ececec;"| ROM-DOS | [http://www.datalight.com Datalight] | Datalight | Proprietary | ? |- |} == Technical specifications == {| border="1" cellpadding="1" cellspacing="0" style="font-size: 85%; border: gray solid 1px; border-collapse: collapse; text-align: center; width: 100%" |- style="background: #ececec;" !style="background: #ececec;"|Name !style="background: #ececec;"|Max Hard_Drive partition size !style="background: #ececec;"| File_system supported natively !style="background: #ececec;"|3.5" Floppy capacities supported natively !style="background: #ececec;"|5.25" Floppy capacities supported natively !style="background: #ececec;"|Integrated disk compression utility? !style="background: #ececec;"|Long File Names supported natively? |- !style="background: #ececec;"| MS-DOS 1.1 | n/a | File Allocation Table | n/a | 360kB | No | No |- !style="background: #ececec;"| MS-DOS 3.0 | 32MB | FAT12 | n/a | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 3.2 | 32MB | FAT12 | 720kB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 3.3 | 32MB | FAT12 | 720kB, 1.44MB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 4.0 | 2GB | FAT12, File Allocation Table | 720kB, 1.44MB | 360kB, 1.2MB | No | No |- !style="background: #ececec;"| MS-DOS 6.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | Doublespace | No |- !style="background: #ececec;"| MS-DOS 6.22 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | DriveSpace | No |- !style="background: #ececec;"| MS-DOS 7.0 (Microsoft_Windows 95A) | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| MS-DOS 7.1x (Windows 95B/OSR2, 95C/OSR2.5, 98, and 98SE) | 124.55GB (with FAT32) | FAT12, FAT16, File Allocation Table | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| MS-DOS 8.0 (Windows ME) | 124.55GB (with FAT32) | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| DR-DOS 6.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | Superstore | No |- !style="background: #ececec;"| DR-DOS 7.03 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| DR-DOS 8.0 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| FreeDOS beta 0.9 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| Novell DOS 7.0 | 2GB | FAT12, FAT16 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| OpenDOS 7.01 | 2GB | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | No |- !style="background: #ececec;"| PC-DOS 1.0 | n/a | FAT12 | n/a | 360kB | No | No |- !style="background: #ececec;"| PC-DOS 7.x / 2000 | 2GB | FAT12, FAT16 | 720kB, 1.44MB,
1.86MB (IBM_Extended_Density_Format), 2.88MB | 360kB, 1.2MB,
1.54MB (XDF) | Stacker | No |- !style="background: #ececec;"| PTS-DOS 32 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| PTS-DOS 2000 | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| PTS-DOS 2000 PRO | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- !style="background: #ececec;"| ROM-DOS | ? | FAT12, FAT16, FAT32 | 720kB, 1.44MB, 2.88MB | 360kB, 1.2MB | ? | Yes |- |} == Notes == Current understanding has it that if one has a license to run a Windows version, one can also legally install any MS-DOS version up to the level of that Windows' version. MS-DOS 8.0 has most of the functionality of previous versions, but there are significant losses of usability, like: the loss of FORMAT /S command; loss of SYS A: (or SYS B:) command for floppies; inability to boot to a command prompt without substitution/modification of IO.SYS and COMMAND.COM. The limit of 124.55GB for FAT32 partition size is a limitation of Microsoft's SCANDISK utility. [http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q184006& Microsoft's KB article 184006]. Other DOS versions supporting FAT32 may allow a larger partition size closer to the theoretical ~2TB maximum suggested by FAT32's specifications. While Windows ME may be unsupported and end-of-life, a version of its underlying DOS is included with Windows XP. When one formats a floppy in Windows XP and selects "Create an MS-DOS startup disk", the floppy is formatted with a DOS version that identifies itself as "Windows Millenium [Version 4.90.3000]". == See also == * CP/M * DR-DOS * GNU/DOS * MS-DOS * PC-DOS == External link == [http://www.oldfiles.org.uk/powerload/timeline.htm Detailed timeline of DOS variants] DOS on IBM PC compatibles Software comparison
See other meanings of words starting from letter:
X
Words begining with X86_DOS_Comparison:
X86_DOS_Comparison
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