Software:FreeDOS

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Short description: Open source clone of MS-DOS

FreeDOS
FreeDOS logo4 2010.svg
FreeDOS 1.1 screenshot.png
FreeDOS 1.1 default shell, FreeCOM
DeveloperJim Hall & The FreeDOS team
Written inAssembly Language, C[1]
OS familyDOS
Working stateCurrent
Source modelOpen source[2]
Initial release16 September 1994; 30 years ago (1994-09-16)[3]
|Final release|Latest release}}1.3 / 20 February 2022; 2 years ago (2022-02-20)[4]
|Final preview|Latest preview}}1.3 RC5 / 14 December 2021; 3 years ago (2021-12-14)[5]
Available inEnglish, German, Dutch
Platformsx86
Kernel typeMonolithic kernel[6]
Influenced byMS-DOS
Default user interfaceCommand-line interface (COMMAND.COM)
LicenseGNU GPL[2] with various different licenses for utilities

FreeDOS (formerly Free-DOS and PD-DOS) is a free software operating system for IBM PC compatible computers. It intends to provide a complete MS-DOS-compatible environment for running legacy software and supporting embedded systems.[7]

FreeDOS can be booted from a floppy disk or USB flash drive.[8][9] It is designed to run well under virtualization or x86 emulation.[10]

Unlike most versions of MS-DOS,[11] FreeDOS is composed of free software, licensed under the terms of the GNU General Public License.[2] However, other packages that form part of the FreeDOS project include non-GPL software considered worthy of preservation, such as 4DOS, which is distributed under a modified MIT License.[12]

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History

Blinky, the mascot of FreeDOS

The FreeDOS project began on 29 June 1994, after Microsoft announced it would no longer sell or support MS-DOS. Jim Hall – who at the time was a student[13] – posted a manifesto proposing the development of PD-DOS, a public domain version of DOS.[14] Within a few weeks, other programmers including Pat Villani and Tim Norman joined the project. Between them, a kernel (by Villani), the COMMAND.COM command line interpreter (by Villani and Norman), and core utilities (by Hall) were created by pooling code they had written or found available.[15][16] For some time, the project was maintained by Morgan "Hannibal" Toal. There have been many official pre-release distributions of FreeDOS before the final FreeDOS 1.0 distribution.[4] GNU/DOS, an unofficial distribution of FreeDOS, was discontinued after version 1.0 was released.[17][18]

Blinky the Fish is the mascot of FreeDOS. He was designed by Bas Snabilie.[19]

Distribution

FreeDOS 1.1, released on 2 January 2012,[20] is available for download as a CD-ROM image: a limited install disc that only contains the kernel and basic applications, and a full disc that contains many more applications (games, networking, development, etc.), not available (As of November 2011) but with a newer, fuller 1.2.[21] The legacy version 1.0 (2006) consisted of two CDs, one of which was an 8 MB install CD targeted at regular users and the other which was a larger 49 MB live CD that also held the source code of the project.[21]

Commercial uses

FreeDOS is used by several companies:

  • Dell preloaded FreeDOS with their n-series desktops to reduce their cost. The firm has been criticized for making these machines no cheaper, and harder to buy, than identical systems with Windows.[22]
  • HP provided FreeDOS as an option in its dc5750 desktops, Mini 5101 netbooks and Probook laptops.[23][24][25] FreeDOS is also used as bootable media for updating the BIOS firmware in HP systems.[26]
  • FreeDOS is included by Steve Gibson's hard drive maintenance and recovery program, SpinRite.[27]
  • Intel's Solid-State Drive Firmware Update Tool loaded the FreeDOS kernel.[28]

Non-commercial uses

FreeDOS is also used in multiple independent projects:

Compatibility

FreeDOS version history[4][35][36]
Version Status Codename Date
0.01 ALPHA None 16 September 1994
0.02 ALPHA None December 1994
0.03 ALPHA None January 1995
0.04 ALPHA None June 1995[37]
0.05 ALPHA None 10 August 1996
0.06 ALPHA None November 1997
0.1 BETA Orlando 25 March 1998
0.2 BETA Marvin 28 October 1998
0.3 BETA Ventura 21 April 1999
0.4 BETA Lemur 9 April 2000
0.5 BETA Lara 10 August 2000
0.6 BETA Midnite 18 March 2001
0.7 BETA Spears 7 September 2001
0.8 BETA Nikita 7 April 2002
0.9 BETA None 28 September 2004
1.0 FINAL None 3 September 2006
1.1 FINAL None 2 January 2012
1.2 FINAL None 25 December 2016
1.3 FINAL None 20 February 2022

Hardware

FreeDOS requires a PC/XT machine with at least 640 kB of memory.[38] Programs not bundled with FreeDOS often require additional system resources.

MS-DOS and Win32 console

FreeDOS is mostly compatible with MS-DOS. It supports COM executables, standard DOS executables and Borland's 16-bit DPMI executables. It is also possible to run 32-bit DPMI executables using DOS extenders. The operating system has several improvements relative to MS-DOS, mostly involving support for newer standards and technologies that did not exist when Microsoft ended support for MS-DOS, such as internationalization, or the Advanced Power Management TSRs.[39] Furthermore, with the use of HX DOS Extender, many Windows Console applications function properly in FreeDOS, as do some rare GUI programs, like QEMM and Bochs.[40]

DOS-based Windows

FreeDOS is able to run Microsoft Windows 1.0 and 2.0 releases. Windows 3.x releases, which had support for i386 processors, cannot fully be run in 386 Enhanced Mode,[41] except partially in the experimental FreeDOS kernel 2037.[citation needed]

Windows 95, Windows 98 and Windows Me use a stripped-down version of MS-DOS. FreeDOS cannot be used as a replacement because the undocumented interfaces between MS-DOS 7.0–8.0 and Windows "4.xx" are not emulated by FreeDOS; however, it can be installed and used beside these systems using a boot manager program, such as BOOTMGR or METAKERN included with FreeDOS.[citation needed]

Windows NT and ReactOS

Windows NT-based operating systems, including Windows 2000, XP, Vista, 7, 8, 8.1,10 and 11 for desktops, and Windows Server 2003, 2008 and 2008 R2 for servers, do not make use of MS-DOS as a core component of the system. These systems can make use of the FAT file systems which are used by MS-DOS and earlier versions of Windows; however, they typically use the NTFS (New Technology File System) by default for security and other reasons. FreeDOS can co-exist on these systems on a separate partition or on the same partition on FAT systems. The FreeDOS kernel can be booted by adding it to the Windows 2000 or XP's NT Boot Loader configuration file, boot.ini,[42] or the freeldr.ini equivalent for ReactOS.[43]

File systems

FreeDOS's default text editor—a clone of the MS-DOS Editor, with added features

FAT32 is fully supported and is the preferred format for the boot drive.[44] Depending on the BIOS used, up to four Logical Block Addressing (LBA) hard disks of up to 128 GB, or 2 TB, in size are supported.[45] There has been little testing with large disks, and some BIOSes support LBA but produce errors on disks larger than 32 GB; a driver such as OnTrack or EZ-Drive resolves this problem.[citation needed] FreeDOS can also be used with a driver called LFNDOS to enable support for Windows 95-style long file names,[46] but most pre-Windows 95 programs do not support LFNs, even with a driver loaded. There is no planned support for NTFS, ext2 or exFAT, but there are several external third-party drivers available for that purpose. To access ext2 file systems, LTOOLS, a counterpart to Mtools, can sometimes be used to copy data to and from ext2 file system drives.[citation needed]

See also

References

  1. ↑ "FreeDOS Spec". Freedos. 2008-12-24. http://wiki.freedos.org/wiki/index.php/FreeDOS_Spec#Programming_languages. 
  2. ↑ 2.0 2.1 2.2 "FDOS/kernel" (in en). https://github.com/FDOS/kernel/blob/master/COPYING. 
  3. ↑ "Releases/Alpha 1". Freedos. 2021-04-22. http://wiki.freedos.org/wiki/index.php/Releases/Alpha1. 
  4. ↑ 4.0 4.1 4.2 "FreeDOS History". Freedos.org. https://www.freedos.org/history/. 
  5. ↑ "FreeDOS 1.3 RC4". https://sourceforge.net/p/freedos/news/2021/05/freedos-13-rc4/. 
  6. ↑ FreeDOS Kernel. Emeryville, CA, USA: Miller Freeman. 1996. ISBN 0-87930-436-7. 
  7. ↑ "Main Page". The FreeDOS Project. http://wiki.freedos.org/wiki/index.php/Main_Page. 
  8. ↑ "Booting DOS from a USB flash drive". 2007-08-21. http://www.bensbits.com/2007/08/21/booting_dos_from_a_usb_flash_drive. 
  9. ↑ "How to Create a Bootable FreeDOS Floppy Disk". 2005-07-19. http://www.linfo.org/freedos_floppy.html. 
  10. ↑ "Though "barely an operating system," DOS still matters (to some people)". Condé Nast. 2014-07-14. https://arstechnica.com/information-technology/2014/07/it-may-be-barely-an-operating-system-but-dos-still-matters-to-some-people/. "But FreeDOS has become much more friendly to virtualization and hardware emulation—it's even the heart of the DOSEMU emulator" 
  11. ↑ "Re-Open-Sourcing MS-DOS 1.25 and 2.0". 2018-09-28. https://blogs.msdn.microsoft.com/commandline/2018/09/28/re-open-sourcing-ms-dos-1-25-and-2-0/. 
  12. ↑ "4DOS". The FreeDOS Project. https://www.freedos.org/software/?prog=4dos. 
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named FLOSS
  14. ↑ Hall, Jim (1994-06-29). "PD-DOS project *announcement*". comp.os.msdos.apps. Retrieved 2008-06-14.
  15. ↑ "The past, present, and future of the FreeDOS Project". 2002-03-25. http://archive.linuxgizmos.com/the-past-present-and-future-of-the-freedos-project-a/. 
  16. ↑ "About". The FreeDOS Project. 2006-09-23. https://www.freedos.org/freedos/about/. 
  17. ↑ "Introducing GNU/DOS 2005". http://www.osnews.com/story/10900/Introducing_GNU_DOS_2005. 
  18. ↑ "GNU/DOS Project Discontinued". 2006-12-02. http://news.softpedia.com/news/GNU-DOS-Project-Discontinued-41470.shtml. 
  19. ↑ FreeDOS official logos
  20. ↑ "Announcement on official FreeDOS homepage". 2012-01-02. https://sourceforge.net/news/?group_id=5109&id=305444. 
  21. ↑ 21.0 21.1 "FreeDOS 1.0". The FreeDOS Project. https://www.freedos.org/freedos/files/. 
  22. ↑ "How Dell repels attempts to buy its 'open source' PC". https://www.theregister.co.uk/2005/10/06/dell_open_pc/. 
  23. ↑ "HP Compaq dc5750 Business PC". Hewlett-Packard. http://h18000.www1.hp.com/products/quickspecs/12546_na/12546_na.HTML. 
  24. ↑ "First Look at HP's Low-Cost ProBook Laptop Lineup". EWeek. http://www.eweek.com/c/a/Desktops-and-Notebooks/First-Look-at-HPs-LowCost-ProBook-Laptop-Lineup-880043/. [yes|permanent dead link|dead link}}]
  25. ↑ "HP's Mini 5101: Netbook Deluxe, With All the Trimmings". Technologizer. 2009-06-23. http://technologizer.com/2009/06/23/hps-mini-5101-netbook-deluxe-with-all-the-trimmings/. 
  26. ↑ "FreeDOS Bootable Media". Hewlett-Packard. 2010-10-25. http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=321957&prodSeriesId=3442832&swItem=ob-88522-1&mode=4&idx=3. 
  27. ↑ "SpinRite 6.0 for Linux Users". Linux Journal. 2004-07-19. http://www.linuxjournal.com/article/7684. Retrieved 2017-02-09. 
  28. ↑ "Intel SATA Solid-State Drive Firmware Update Tool". Intel. http://downloadcenter.intel.com/detail_desc.aspx?agr=&ProductID=&DwnldID=18363&strOss=&OSFullName=&lang=eng. 
  29. ↑ "Floppy Enhanced DivX Universal Player". http://membres.multimania.fr/zeroiq/index.php?page=40..FED-UP%20boot%20floppy%20.php. 
  30. ↑ "FUZOMA Educational Software". http://superkeen.com/peacecorpsweblog/learning-software/. 
  31. ↑ kraileth (2012-10-12). "An extraordinary TK example! | eerielinux". Eerielinux.wordpress.com. https://eerielinux.wordpress.com/2012/10/12/an-extraordinary-tk-example/. 
  32. ↑ kraileth (2014-12-30). "An interview with the Nanolinux developer | eerielinux". Eerielinux.wordpress.com. https://eerielinux.wordpress.com/2014/12/30/an-interview-with-the-nanolinux-developer/. 
  33. ↑ "Artificial Intelligence Methods". http://tawny.cs.nott.ac.uk:80/~sbx/winnie/aim/overview.htm. 
  34. ↑ "Georg's Personal Homepage". Georgpotthast.de. http://www.georgpotthast.de/. 
  35. ↑ "FreeDOS software package comparison". Ibiblio.org. https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/compare.html. 
  36. ↑ Hall, Jim (2007-10-02). "Removing old distributions from ibiblio" (Mailing list). Retrieved 2009-10-07.
  37. ↑ "The Free-DOS Project - Files [Free-DOS Alpha 4 archive comment and files give date 28 June 1995 - but it could be an update"]. 1996-12-25. http://sunsite.unc.edu/pub/micro/pc-stuff/freedos/files.html. 
  38. ↑ "Configure IT Quick: Use FreeDOS as a replacement for MS-DOS". CBS Interactive. 2003-07-22. http://www.techrepublic.com/article/configure-it-quick-use-freedos-as-a-replacement-for-ms-dos/. 
  39. ↑ "DOS lives! Open source reinvents past". 2006-09-04. http://news.techworld.com/operating-systems/6783/dos-lives-open-source-reinvents-past/. 
  40. ↑ "HX DOS Extender". http://www.japheth.de/HX.html. 
  41. ↑ "Windows on FreeDOS?". FreeDOS. 2014-09-03. https://www.freedos.org/history/newsitem/166.html. [yes|permanent dead link|dead link}}]
  42. ↑ "Install FreeDOS without any CD, floppy, USB-key, nor any other removable media". 2004-10-01. http://marc.herbert.free.fr/linux/freedos_no_removable.html. 
  43. ↑ "FreeLoader — ReactOS Wiki". https://reactos.org/wiki/FreeLoader. 
  44. ↑ "Creating a Bootable DOS USB Stick". 2015-05-07. https://www.thomas-krenn.com/en/wiki/Creating_a_Bootable_DOS_USB_Stick. 
  45. ↑ Upgrading and Repairing PCs (21st ed.). Que Publishing. 2013-03-22. http://www.quepublishing.com/articles/printerfriendly/2028834. 
  46. ↑ "Old school: I work in DOS for an entire day". Condé Nast. 2014-07-03. https://arstechnica.com/information-technology/2014/07/dos-boot-ars-spends-a-day-working-in-freedos/. 
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Further reading

External links



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