InstallShield installer archive

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'''InstallShield installer archive''' is what we're calling the format of the <code>_inst32i.ex_</code> file included in many Windows software distributions that use the [[InstallShield]] installation software. Another filename used by the format is <code>_inst16.ex_</code>. Rarely, filenames <code>_inst32a.ex_</code> (related to Windows NT for DEC Alpha) and <code>_inst32m.ex_</code> (MIPS) may be found.
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'''InstallShield installer archive''' is what we're calling the format of the file usually named <code>_inst32i.ex_</code> or <code>_inst16.ex_</code>, included in many Windows software distributions that use the [[InstallShield]] installation software. Filenames <code>_inst32a.ex_</code> (related to Windows NT for DEC Alpha) and <code>_inst32m.ex_</code> (MIPS) are also possible, though rare.
  
 
It uses [[PKWARE DCL Implode]] compression.
 
It uses [[PKWARE DCL Implode]] compression.
  
== Disambiguation ==
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An archive in this format contains redistributable InstallShield executable files specific to one platform.
It is not to be confused with [[InstallShield CAB]], [[InstallShield Z]], or [[MS-DOS installation compression]].
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== Discussion ==
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See [[InstallShield]] for other InstallShield formats.
Based on unconfirmed information, the 16-bit <code>setup.exe</code> program detects the user's platform, and extracts the appropriate platform-specific installer programs from (e.g.) <code>_inst32i.ex_</code>.
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== Identification ==
 
== Identification ==
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At offset 8 is the message "<code>Copyright (c) 1990-1995 Stirling Technologies, Inc. All Rights Reserve</code>".
 
At offset 8 is the message "<code>Copyright (c) 1990-1995 Stirling Technologies, Inc. All Rights Reserve</code>".
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== Software ==
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* {{Deark}}
  
 
== Sample files ==
 
== Sample files ==
* Examples of software with such a file: [http://cd.textfiles.com/cdaction/cdaction24b/GOLF/], [http://cd.textfiles.com/cdaction/cdaction32/JAKKAL/], [http://cd.textfiles.com/cdaction/cdaction32/WARGASM/]
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* Examples of software with such a file: [{{CdTextfilesURL|cdaction/cdaction24b/GOLF/}}], [{{CdTextfilesURL|cdaction/cdaction32/JAKKAL/}}], [{{CdTextfilesURL|cdaction/cdaction32/WARGASM/}}]
* https://telparia.com/fileFormatSamples/archive/installShieldInstallerArchive/
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* {{DexvertSamples|archive/installShieldInstallerArchive}}
  
 
== Links ==
 
== Links ==
* [http://filext.com/file-extension.php?extension=%3F%3F_ FILExt page about the ??_ file extension pattern] (Look for "InstallShield")
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* [https://filext.com/file-extension/%3F%3F_ FILExt page about the ??_ file extension pattern] (Look for "InstallShield")
  
 
[[Category:File formats with a distinctive filename]]
 
[[Category:File formats with a distinctive filename]]

Latest revision as of 16:08, 22 November 2025

File Format
Name InstallShield installer archive
Ontology
Extension(s) .ex_

InstallShield installer archive is what we're calling the format of the file usually named _inst32i.ex_ or _inst16.ex_, included in many Windows software distributions that use the InstallShield installation software. Filenames _inst32a.ex_ (related to Windows NT for DEC Alpha) and _inst32m.ex_ (MIPS) are also possible, though rare.

It uses PKWARE DCL Implode compression.

An archive in this format contains redistributable InstallShield executable files specific to one platform.

See InstallShield for other InstallShield formats.

Contents

[edit] Identification

Files begin with bytes 2a ab 79 d8.

At offset 8 is the message "Copyright (c) 1990-1995 Stirling Technologies, Inc. All Rights Reserve".

[edit] Software

[edit] Sample files

[edit] Links

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