10
Changing Environment Variables
Chapter Overview
Introduction
Environment variables are firmware parameters that can be
changed to suit your specific system needs. You set environment
variables while your system is in console mode. Your system is
shipped with default values set for all available environment
variables. The environment variable settings include the
following startup information:
• The device from which your system boots
• The default startup action each time your system is turned
on or a halt instruction is executed by software
• The language used in console mode
This chapter describes the available environment variables and
how to display or change the current settings.
In This Chapter
This chapter includes the following topics:
• Before You Begin
• Available Environment Variables
• Displaying Current Environment Variables
• Changing the Default Startup Action (auto_action)
• Changing the Default Boot Device (bootdef_dev)
• Changing the Default Diagnostic Startup Mode (diag_quick)
• Changing the Default Keyboard Language (language)
Changing Environment Variables 10–1
