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| Chapter 1 # Introduction The Solaris 9 Maintenance Update 2 Installation Guide explains how to install and back out the Solaris™ 9 Maintenance Update 2 (MU2) software. This guide is for system administrators who are installing the MU2 software. For late-breaking MU2 issues that were identified too late to be included in this guide, refer to the Solaris 9 Maintenance Update 2 Installation Guide at `http://docs.sun.com`. If you need more information on general procedures for system administration, refer to the Solaris 9 System Administrator Collection. # What Is the Solaris 9 Maintenance Update 2? The Solaris 9 MU2 contains the same set of patches that is prepackaged on the Solaris 9 12/02 software CDs. The MU2 installation automatically updates your system without regressing any patches that you have previously installed. The Solaris 9 MU2 is available as a file for downloading from the Web. # When to Install the Solaris 9 Maintenance Update 2 First, your system must be running the Solaris 9 operating environment. You can then install the Solaris 9 MU2 if you meet both of the following conditions: You are applying patches that were released in the Solaris 9 12/02 operating environment. You are retaining patches that you previously applied to your system. If your system is running the Solaris 9 operating environment, or a Solaris 9 Update release, and you want to fully upgrade to new features and hardware support, install the Solaris 9 12/02 operating environment. The patches that were applied by installing the Solaris 9 12/02 operating environment replace previously installed Solaris 9 patches. The newly installed patches cannot be backed out of the release. Maintenance Updates are primarily designed to update the Solaris operating environment to a known, tested patch level. If you want to apply a particular patch, and only that patch, do so through your normal support channels. Note - The name of this product is Solaris 9 MU2. Code or package path names might use Solaris 2.9 or SunOS™ 5.9. Always follow the code or path as it is written in this document. |