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Oracle® OpenBoot 4.x Administration Guide

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Updated: June 2020

Change a Variable Setting

Use this procedure to change an OpenBoot configuration variable setting.


Caution  -  Use extreme care when changing a configuration variable. An incorrect setting or typo can prevent the virtual machine from booting.

Note -  Many variable changes do not affect the operation of the firmware until the next power cycle or reset, at which time the firmware uses the new value of the variable.
  1. Access the OpenBoot CLI.

    See Accessing the OpenBoot CLI and Getting Help.

  2. At the OpenBoot prompt, use this syntax:
    {0} ok setenv variable-name value

    Where variable-name is the name of the variable and value is a numeric value or text string appropriate for the named variable. A numeric value is interpreted as a decimal number, unless preceded by 0x, which is the qualifier for a hexadecimal number.

    For example, to set the auto-boot? variable to false, type:

    {0} ok setenv auto-boot? false

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