Boot modes:

Power On Normal
This profile boots an operating system from the designated boot device.

Power On SMS
This profile is similar to Power On Diagnostic Stored Boot List Profile, except the system boots using the default boot list that is stored in the system
firmware.

Power On Diagnostic Default Boot List
This profile boots to the System Management Services (SMS) menus. The SMS menus include:

Password Utilities
Display Error Log
Remote Initial Program Load Setup
SCSI Utilities
Select Console
MultiBoot
Select Language
OK Prompt

Power On Diagnostic Stored Boot List
This profile causes the system to perform a service mode boot using the service mode boot list saved on the managed system. If the system boots
operating system from the disk drive and Operating System diagnostics are loaded on the disk drive, operating system boots to the diagnostics menu.
Using this profile to boot the system is the preferred way to run online diagnostics.

Power On Open Firmware OK Prompt
This profile is used only by service representatives to obtain additional debug information. When this selection is enabled, the system boots to the open
firmware prompt.