Installation

Digital UNIX Version 4.0 supports full, cloned, and update installations either from a CD-ROM or across the network from a Remote Installation Services (RIS) server. For more information on RIS, see the guide Sharing Software on a Local Area Network.

Note: The RIS software is available in the Server Extensions kit and requires a separate license and PAK to access. For more information, see Chapter 1 and the Software Product Description for Digital UNIX Version 4.0.

• Full Installation

  A full installation allows users to install Digital UNIX Version 4.0 on new systems and is divided into the following three procedures:

  • Default Installation

    A default installation installs all mandatory software subsets onto a single disk chosen by the user. Additional optional subsets can be installed later (if there is room on the disk) by using the setld command.

    The default installation is intended for those users who do not want to customize their disk partitions, install across multiple disks, and who want to get the operating system up and running quickly and easily.

  • Custom Installation

    A custom installation is thoroughly configurable, allowing users to select disks and partitions for the root, usr, and var file systems and for primary and secondary swap. In addition, the custom installation allows users to select from a list of optional software subsets, rather than automatically installing only the mandatory subsets.

    The Custom Installation is intended for users who install across different disks and who know which optional subsets they need to install.

  • Cloned Installation

    A cloned installation lets you duplicate the file system layout, file system type, and software subset selections from a similar type system that has already been installed with Digital UNIX Version 4.0. A cloned installation can only be performed using RIS. If your system is registered to a RIS environment and a configuration description file (CDF) is specified, the installation procedure retrieves the CDF and uses the system configuration information stored in the CDF to configure and install your system.

  For more information on full installations, see the Installation Guide.

• Update Installation

  The Update Installation allows users to update their systems to a new version of the operating system without overwriting customized system files, user files, altering file systems, or destroying existing disk partitions.

  Note: Your system must be running Digital UNIX Version 3.2C, 3.2D-1, or 3.2D-2 in order to update install to Digital UNIX Version 4.0.

  The installupdate utility invokes the update installation and does the following:

  • Updates existing software subsets to Digital UNIX Version 4.0 and installs new mandatory software subsets.

  • Does not overwrite customized system files, like /etc/passwd and /etc/fstab.

  • Merges files that have changed with the old files on your system

    If something new is delivered in a system file that you have customized, or if a system file has changed, the update installation attempts to merge your file with the new file. Although the update installation attempts to merge files automatically, it writes a log of those files that must be merged manually.

  • Provides an array of log files documenting what it has done.

  Once the update installation is complete, you can load additional subsets using the setld command.

  For more information on the update installation, see the Installation Guide and the Update Installation Quick Reference Card.