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The AARD code was a segment of code in a beta release of Microsoft Windows 3.1 that would determine whether Windows was running on MS-DOS or PC DOS, rather than a competing workalike such as DR-DOS, and would result in a cryptic error message in the latter case. This XOR-encrypted, self-modifying, and deliberately obfuscated machine code used a variety of undocumented DOS structures and functions to perform its work. The code was present in the installer, in WIN.COM, and in several other executables in the operating system.

Attributes	Values
rdf:type	yago:WikicatMicrosoftWindows yago:Artifact100021939 yago:Framework103391770 yago:Object100002684 yago:PhysicalEntity100001930 yago:Window104587648 yago:YagoGeoEntity yago:YagoPermanentlyLocatedEntity television episode yago:Structure104341686 yago:SupportingStructure104361095 yago:Whole100003553
rdfs:label	AARD code (en)
rdfs:comment	The AARD code was a segment of code in a beta release of Microsoft Windows 3.1 that would determine whether Windows was running on MS-DOS or PC DOS, rather than a competing workalike such as DR-DOS, and would result in a cryptic error message in the latter case. This XOR-encrypted, self-modifying, and deliberately obfuscated machine code used a variety of undocumented DOS structures and functions to perform its work. The code was present in the installer, in WIN.COM, and in several other executables in the operating system. (en)
foaf:depiction
dcterms:subject	Microsoft criticisms and controversies Windows components
Wikipage page ID	13385203 (xsd:integer)
Wikipage revision ID	1112595804 (xsd:integer)
Link from a Wikipage to another Wikipage	Caldera, Inc. Caldera v. Microsoft Beta release Bill Gates United States v. Microsoft Corp. (2001) Brad Silverberg The Wall Street Journal MS-DOS Halloween documents Patch (computing) Windows 3.1 DR DOS 6.0 business update DR-DOS Fear, uncertainty and doubt Novell Microsoft criticisms and controversies Windows components Jim Allchin Digital Research Bug compatibility Microsoft Operating system Self-modifying code WIN.COM PC DOS Dow Jones & Company, Inc. XOR encryption
Link from a Wikipage to an external page	http://alumni.media.mit.edu/~cwren/windoze95/190860.html http://blogs.msdn.com/larryosterman/archive/2004/08/13/214338.aspx http://kickassgear.com/Articles/Microsoft.htm http://blogs.msdn.com/larryosterman/archive/2004/08/12/213681.aspx https://web.archive.org/web/20100113064451/http:/members.ozemail.com.au/~geoffch%40ozemail.com.au/editorial/aard/ https://web.archive.org/web/20161125120335/https:/blogs.msdn.microsoft.com/larryosterman/2004/08/12/aardvarks-in-your-code/ https://web.archive.org/web/20161125120727/https:/blogs.msdn.microsoft.com/larryosterman/2004/08/13/so-why-didnt-the-windows-guys-just-remove-the-aard-code-from-the-system/ https://web.archive.org/web/20161125121459/http:/alumni.media.mit.edu/~cwren/windoze95/190860.html https://web.archive.org/web/20161125122036/http:/kickassgear.com/Articles/Microsoft.htm http://members.ozemail.com.au/~geoffch@ozemail.com.au/editorial/aard/
sameAs	AARD code AARD code AARD code AARD code
dbp:wikiPageUsesTemplate	dbt:Cite_journal dbt:Cite_web dbt:Reflist dbt:Sic dbt:Use_dmy_dates
thumbnail	wiki-commons:Special:FilePath/Windows_3.10.068_setup_AARD_code.png?width=300
cs1-dates	y (en)
date	April 2019 (en)
has abstract	The AARD code was a segment of code in a beta release of Microsoft Windows 3.1 that would determine whether Windows was running on MS-DOS or PC DOS, rather than a competing workalike such as DR-DOS, and would result in a cryptic error message in the latter case. This XOR-encrypted, self-modifying, and deliberately obfuscated machine code used a variety of undocumented DOS structures and functions to perform its work. The code was present in the installer, in WIN.COM, and in several other executables in the operating system. (en)
gold:hypernym	Segment
prov:wasDerivedFrom	wikipedia-en:AARD_code?oldid=1112595804&ns=0
page length (characters) of wiki page	26106 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:AARD_code
is Link from a Wikipage to another Wikipage of	Caldera (company) Obfuscation (software) MS-DOS Embrace, extend, and extinguish Halloween documents Microsoft litigation Timeline of DOS operating systems Aaron R. Reynolds DR-DOS Fear, uncertainty, and doubt AARD Digital Research Bug compatibility Self-modifying code ARD code
is Wikipage redirect of	Aaron R. Reynolds ARD code
is Wikipage disambiguates of	AARD
is foaf:primaryTopic of	wikipedia-en:AARD_code

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