During the packaging process on Windows, you install the product to be packaged on the reference system of the Packaging Computer, as if you were going to use the product on that computer. This installation, called reference installation, is recorded automatically by the Packager in a number of archive files, which are used for a later installation of the product on target computers.
The reference system on the Packaging Computer includes the file system, installed services, and the registry of the Packaging Computer. Additionally, you can specify files, installation parameters, and other necessary changes to customize the product you are going to package (reference system configuration).
The Packager records all the information required for a later product installation on a target computer in a product in the SXP packaging format, called an SXP product. The Packager also provides all relevant files, directories, or information that is generated automatically during product packaging in a compressed format in the filesn.cmp and ufilesn.cmp archive files (CMP archive files; the ufilesn.cmp file contains user-specific information.)
To avoid large CMP archive file sizes, the Packager creates multiple CMP archive files of limited size and suffixes the names of these files with a sequence number, such as files1.cmp, files2.cmp, and so on.
You can create SXP products for Windows only on a Packaging Computer that runs a Microsoft Windows operating system later than Windows NT. (For the detailed list of Windows versions currently supported by the Packager see the "Supported Operating Environments" chapter in the CA IT Client Manager Readme, which is available as part of the CA IT Client Manager documentation set on the installation DVD.)
With the Packager you can create 64-bit application packages, provided the Packager runs on a 64-bit operating system. The 64-bit SXP product created can be installed only in a 64-bit operating environment.
Once you have created an SXP product, you can optionally convert it to an MSI product, that is, a product in the Microsoft Installer (MSI) format.
Note: MSI products that have been converted in a 64-bit operating environment have the platform type set to “x64” and cannot be installed on target computers running a 32-bit operating system, even if a 32-bit operating system is specified as a “Target OS” in the info.sxp archive file.
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