Microsoft Windows XP With SP2 Original English Version

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Microsoft creates software updates for the products that are listed in the "Applies to" section in two different development environments. Software updates that address widespread critical issues, such as security vulnerabilities, and that are broadly released by Microsoft are also known as general distribution releases (GDRs). These software updates include the following:
? security updates
? critical updates
? updates
? update rollups
? drivers
? feature packs
These software updates are created in a development environment that is separate from hotfixes. Hotfixes are distributed by Microsoft Product Support Services to address a specific customer situation. Hotfixes are produced quickly to provide immediate assistance to specific Microsoft customers. Therefore, hotfixes may not be tested as thoroughly as security updates, critical updates, updates, update rollups, drivers, and feature packs. Microsoft maintains different development environments to isolate security updates, critical updates, updates, update rollups, drivers, and feature packs from hotfixes and the ongoing development work that is being performed by Microsoft for subsequent service packs. This process minimizes the risk for customers by allowing them to install only fixes that address widespread critical issues, such as security vulnerabilities, and that do not include hotfix files.

Security updates, critical updates, updates, update rollups, drivers, and feature packs for the products that are listed in the "Applies to" section include two or more copies of the same files to support these two different development environments for each "cardinal point" in the product's release cycle. A cardinal point exists for the original release version of the product and each service pack (SPx). GDR and hotfix copies of the same files are put in different folders in the software update package for each cardinal point in the product's release cycle. For example, before Service Pack 1 (SP1), security updates, critical updates, updates, update rollups, drivers, and feature packs for Windows Server 2003 contain two copies of the same files in RTMGDR and RTMQFE folders. After SP1 is released, Windows Server 2003 security updates, critical updates, updates, update rollups, drivers, and feature packs may contain copies of the same files in RTMGDR and RTMQFE folders and SP1GDR and SP1QFE folders. Files in the GDR folders contain only GDR-class fixes. Files in the QFE folders are cumulative and contain both the GDR-class fix and all previous hotfixes that affect the included binaries. Because Microsoft provides support for the current and the next most recent service pack (N and N-1), security updates, critical updates, updates, update rollups, drivers, and feature packs may contain up to six versions of the same files.

When you install a security update, critical update, update, update rollup, driver, or feature pack, the package installer (Update.exe) checks to see if your existing files are from the original release version (RTM), SPx, or the GDR environment or hotfix environment. If all the files that are being updated on your computer are from the original release version, SPx, or GDR environment (you have not previously installed a hotfix to update one of the files since the last cardinal point was established) then Update.exe installs the files from the appropriate GDR folder to your computer. If any of the files that are being updated on your computer are from the hotfix environment (you have previously installed a hotfix to update one of the files since the last cardinal point was established), Update.exe installs the files from the appropriate QFE folder to your computer.


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