Bob Ponting: Digital Research Ready to Ship DR DOS 3.4. In: InfoWorld. Band11, Nr.9, 27. Februar 1989, S.23 (englisch, eingeschränkte Vorschau in der Google-Buchsuche): “The single-user single-tasking operating system, which is provided as an OEM product, has been licensed by 24 OEMs and corporate resellers for bundling with PC-compatibles since its introduction in May 1988, said Greg Ewald, a DRI spokesman. Most clients are Taiwanese clone makers, but more than half of their machines will be sold in the United States.”
Sharon Gaudin: Caldera deposition raises evidence issues. In: Computerworld. Band32, Nr.36, 7. September 1998, ISSN0010-4841, S.8 (englisch, eingeschränkte Vorschau in der Google-Buchsuche): ‘Germany was a very important battleground between MS DOS and DR DOS in that period,’ [Steve] Hill [an attorney for Caldera] said. ‘DR DOS was offered by Vobis, the largest PC manufacturer in Germany, and Central Europe for that matter. It was probably the most significant DR DOS account. …’ … Hill noted that in the 1992–1993 time frame, Vobis went from being a DR DOS account to a strictly MS DOS account.
Gerhard Franken: DOS ge-packt. 1. Auflage. mitp, 2003, ISBN 3-8266-1313-9, 8. Festplatten und mehr, S.504, 8.1. Einrichtung von Festplatten, 8.1.4 Partitionen, Cluster und Dateisysteme (eingeschränkte Vorschau in der Google-Buchsuche): „DR-DOS 7.04/7.05 – Auf die DR-DOS-Versionen 7.04 und 7.05 habe ich bereits hier und da hingewiesen. Hierbei handelt es sich lediglich um Weiterentwicklungen der Kernel-Dateien durch Ontrack Systems. Diese unterstützen zwar FAT32 und LBA, sollen aber einige Fehler enthalten und sich nach Aussage von Ontrack Systems nicht für die Installation auf Festplatte eigenen!“
Software Developer Caldera Sues Microsoft For Antitrust Practices Alleges Monopolistic Acts Shut Its DR DOS Operating System Out of Market. (Pressemitteilung) In: Caldera News. Caldera, 24. Juli 1996, abgerufen am 30. Mai 2024 (englisch): „As these demands escalated, the suit explains, ‘a number of OEMs approached DRI and requested that it develop a version of DOS that would fill the gaps in functionality that plagued MS-DOS. ... Accordingly, in 1987 DRI began planning for a new version of DOS, to be called DR DOS. The result of DRI's initial development effort was a product designated as DR DOS 3.31, introduced on May 28, 1988. DR DOS 3.31 was followed quickly by enhanced versions of the product. Thus DR DOS 5.0, introduced in May 1990, and DR DOS 6.0, introduced in September 1991, were significantly superior to then-existing versions MS-DOS in many areas.‘“
License agreement for the CP/M material presented on this site. (E-Mail-Auszüge) E. C. Masloch, 7. Juli 2022, abgerufen am 21. Juni 2025 (englisch): „Let this paragraph represent a right to use, distribute, modify, enhance, and otherwise make available in a nonexclusive manner CP/M and its derivatives. This right comes from the company, DRDOS, Inc.'s purchase of Digital Research, the company and all assets, dating back to the mid-1990's. DRDOS, Inc. and I, Bryan Sparks, President of DRDOS, Inc. as its representative, is the owner of CP/M and the successor in interest of Digital Research assets.“
MPAUL: 25 YEARS OF DR DOS HISTORY. (Textdatei; 39 KiB) FreeDOS Project, 18. September 2000, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
Lasse Jensen: Some DOS history........ (Textdatei; 12 KiB) In: E-Mail. 25. November 1997, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
jh: 25+ YEARS OF DOS HISTORY. (Textdatei; 18 KiB) FreeDOS Project, 3. September 2006, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
seattleweekly.com
Mike Romano: The mouse that roared. Forget the feds. It’s up to an obscure Utah company to prove what we already know: that Microsoft is a monopoly. In: Seattle Weekly 16. September 1998, (seattleweekly.com)
Graham Lea: Win95 – is it just Dos 7 plus Windows 4 after all? In: The Register. 5. November 1999, abgerufen am 30. Mai 2024 (englisch): „an internal Microsoft strategy document dated 16 June 1992 admitted that Novell was its biggest threat: ‘Novell is after the desktop. As you know, they have acquired Digital Research and are now working hard to tightly integrate DR-DOS with NetWare. We should also assume they are working on a Windows clone and/or that they are working on a virtualised DOS environment which will run standard mode Windows as a client. This is perhaps our biggest threat.’“
Liam Proven: SvarDOS: DR-DOS is reborn as an open source operating system. In: The Register. 23. Oktober 2024, abgerufen am 21. Juni 2025 (englisch): „Until recently, the the SvarDOS project was essentially a distribution of FreeDOS. SvarDOS cut FreeDOS down into something that would run on even an 8086 or 8088 PC. … Sadly, project lead Udo Kuhnt stopped working on it around 2011, but in recent years another developer, EC Masloch, has continued work on what's now known as the EDRDOS kernel, including simplifying the toolchain needed to build it. In late 2023, Bernd Böckmann created a SvarDOS package for the EDRDOS kernel. Back in July, the SvarDOS developers made it the default kernel.“
MPAUL: 25 YEARS OF DR DOS HISTORY. (Textdatei; 39 KiB) FreeDOS Project, 18. September 2000, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
Lasse Jensen: Some DOS history........ (Textdatei; 12 KiB) In: E-Mail. 25. November 1997, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
jh: 25+ YEARS OF DOS HISTORY. (Textdatei; 18 KiB) FreeDOS Project, 3. September 2006, archiviert vom Original (nicht mehr online verfügbar) am 4. Januar 2022; abgerufen am 4. Januar 2022 (englisch).
winfuture.de
Christian Kahle: SvarDOS: Schlanker FreeDOS-Ableger mit neuem Kernel nun unabhängig. In: WinFuture.de. Sebastian Kuhbach, 2. Januar 2025, abgerufen am 21. Juni 2025: „SvarDOS gibt es als Ableger von FreeDOS schon länger und galt als dessen Minimalvariante. Mit dem neuen Kernel erfolgt aber eine komplette Trennung. Dieser basiert nun auf der Open-Source-Freigabe von DR-DOS durch Caldera im Jahr 1996.“
zdb-katalog.de
Sharon Gaudin: Caldera deposition raises evidence issues. In: Computerworld. Band32, Nr.36, 7. September 1998, ISSN0010-4841, S.8 (englisch, eingeschränkte Vorschau in der Google-Buchsuche): ‘Germany was a very important battleground between MS DOS and DR DOS in that period,’ [Steve] Hill [an attorney for Caldera] said. ‘DR DOS was offered by Vobis, the largest PC manufacturer in Germany, and Central Europe for that matter. It was probably the most significant DR DOS account. …’ … Hill noted that in the 1992–1993 time frame, Vobis went from being a DR DOS account to a strictly MS DOS account.