AIX 5L Problem Determination - IBM Redbooks

3.3 Boot phase 1
Newer PCI architecture machines (for example, the 43P-150) support a service
bootlist. The simplest way to find out if a particular system supports the service
boot option is to execute:
# bootlist -m service -o
0514-220 bootlist: Invalid mode (service) for this model
If you receive the previous error message, the system does not support the
service boot option.
All new PCI systems support the following key allocations as standard:
► F1 or 1 on ASCII terminal: Starts System Management Services
► F5 or 5 on ASCII terminal: Boot diag (use default boot list of fd, cd, scdisk, or
network adapter)
► F6 or 6 on ASCII terminal: Boot diag (use of custom service boot list)
POST LED codes on PCI systems
On old PCI systems, such as the 7020-40P or the 7248-43P, the LED display is
missing, so there will be no LED codes to help solve boot problems. Fortunately,
this has been changed on modern PCI systems, but the error codes generated
during this phase of the system startup differs from model to model. The only
way to figure out the exact meaning of an error code is to refer to the service
guide delivered with the system. IBM provides a Web page where service guides
for most PCI systems are available in HTML and PDF format. The URL is:
http://www.ibm.com/servers/eserver/pseries/library/hardware_docs/index.html
So far, the system has tested the hardware, found a BLV, created the RAMFS,
and started the init process from the BLV. The rootvg has not yet been activated.
From this step on, the boot sequence is the same on both MCA systems and PCI
systems.
The workflow for boot phase 1 is shown in Figure 3-6 on page 23.
22 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques