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2. Memory sizes for systems running partitions with AIX 5.1, if the firmware and HMC release levels are
at the 10/2002 release level (or later). Do not select the HMC partition profile option for Small Real
Mode Address Region for AIX 5.1 partitions. These numbers reflect the maximum when running only
AIX 5.1 partitions, but AIX 5.1 and AIX 5.2 partitions can be mixed, and can allow for additional
partitions to be run (up to the maximum of eight).
3. Memory sizes for systems running partitions with AIX 5.2 (or later) or Linux, if the firmware and HMC
release levels are at the 10/2002 release level (or later). Select the HMC partition-profile option for
Small Real Mode Address Region for these partitions.
4. AIX 5.2, when run with the Small Real Mode Address Region partition-profile option, requires that the
maximum memory setting is no greater than 64 times the minimum memory setting. For example, if
the minimum memory setting is 256 MB, the maximum memory setting cannot be greater than 16 GB.
Otherwise, AIX does not start.
Powering the System On and Off
For procedures to power on and power off the system for various system configurations and operating
systems see "Stopping the System without an HMC Attached" on page 545 and "Starting the System
Without an HMC Attached" on page 546.
Power-On Self-Test
After power is turned on and before the operating system is loaded, the partition does a power-on self-test
(POST). This test performs checks to ensure that the hardware is functioning correctly before the
operating system is loaded. During the POST, a POST screen displays, and POST indicators display on
the system console. If an HMC is used to manage the system the POST indicators display on the HMC's
virtual terminal. The next section describes the POST indicators and functions that can be accessed during
the POST.
POST Indicators
POST indicators indicate tests that are being performed as the partition is preparing to load the operating
system. The POST indicators are words that display on the system console. Each time that the firmware
starts another step in the POST, a POST indicator word displays on the system console. The POST
screen displays the following words:
Memory
Memory test
Keyboard
Initialize the keyboard and mouse. The time period for pressing a key to access the
System Management Services, or to initiate a service mode boot is now open. See "POST
Keys" for more information.
Network
Self-test on network adapters
SCSI
Adapters are being initialized
Speaker
Sounds an audible tone at the end of POST
POST Keys
The POST keys, if pressed after the keyboard POST indicator displays and before the last POST indicator
(speaker) displays, cause the system to start services or boot modes used for configuring the system and
diagnosing problems. The system will beep to remind you to press the POST key (if desired) at the
appropriate time. The keys are described as follows:
1 Key
The numeric 1 key, when pressed during POST, starts the System Management Services (SMS) interface.
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EserverpSeries 650 Service Guide
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