System Administration Guide: Basic Administration

Modifying Boot Behavior on x86 Based Systems

The primary methods for modifying boot behavior on an x86 based system are as follows:

Procedurex86: How to Modify Boot Behavior by Using the eeprom Command

  1. Become superuser or assume an equivalent role.

    Roles contain authorizations and privileged commands. For more information about roles, see Configuring RBAC (Task Map) in System Administration Guide: Security Services.

  2. Change the specified parameter.

    # eeprom parameter=new-value
  3. Verify that the new parameter has been set.

    # eeprom parameter

    The output should display the new eeprom value for the specified parameter.

Example 11–3 x86: Setting boot-file Parameters by Using the eeprom Command

This example shows how to manually specify that the system boot a 64-bit kernel. The system must support 64-bit computing.

# eeprom boot-file=kernel/amd64/unix

This example shows how to manually boot a 32-bit kernel on a 64-bit capable system.

# eeprom boot-file=kernel/unix

This example shows how to restore the default auto detected boot behavior on a system.

# eeprom boot-file=""