System Startup, Configuration, and Shutdown Reference Manual (32650-90907)

Appendix D
Default Configurations Used by INSTALL and UPDATE
Copying Default Configuration File Groups
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Copying Default Configuration File Groups
This section discusses renaming the default configuration files groups used by the UPDATE and INSTALL
utilities mentioned in Chapter 3, “System Startup Functions.”.
Overview
The INSTALL utility replaces a system’s configuration files with a default configuration. These defaults allow
the system manager or system operator to boot the system to a fully operational level. They may then alter
the functioning configuration to meet their system's needs.
The UPDATE utility optionally replaces a system’s configuration files with defaults. During an update, the
system manager or system operator has the choice of whether or not to use a configuration stored on the
system volume or to replace the current configuration with the default.
Before a system can properly use its START command, a functioning set of configuration files must reside in
the configuration group CONFIG. The START command uses CONFIG as its default configuration group.
Since multiple configuration groups reside on a system load tape (SLT), CONFIG is empty until the system
manager copies an appropriate configuration group into it.