Technical data

2.2.1 Successful Power-Up and the HALT Command
The following table explains the system’s response to the three HALT
commands during a successful power-up.
If the power-up is successful
and the HALT parameter is
set to... Then the system...
1 Tries to restart the operating system. (The system
continuously reboots after each restart failure.)
2 Tries to boot the default boot device. (If the system
fails to reboot, it enters console mode.)
3 Enters console mode at the end of the power-up
sequence. (Otherwise, the system autoboots from
the default boot device.)
2.2.2 Unsuccessful Power-Up
If the power-up is unsuccessful, then an error message is displayed above the
console prompt.
Error Format
Error information is displayed in the following format:
Fru Dev_nbr Dev_nam Err_nbr
The following table describes the error format codes.
Code Meaning
Fru The failed FRU code. (Refer to Table A–1.)
Dev_nbr Device number of the failed device.
Dev_nam Device name of the failed device.
Err_nbr A decimal number that corresponds with a specific device failure.
The number refers to specific error tables for problem isolation and
repair procedures.
Diagnostic Testing 2–3