160 IBM Eserver xSeries 455 Planning and Installation Guide
4.4.4 Installing Red Hat Enterprise Linux AS
In this section we focus on the installation of the Red Hat Enterprise Linux AS
3.0, although we also did the installation of the RH AS 2.1 on the x455.
Before starting the installation
Before starting the installation, we recommend that you get and apply the latest
updates and firmware. You can download them from:
Installation procedure
The installation of Red Hat Enterprise Linux AS 3.0 is like any other Red Hat
Linux installation, except that you work on a different architecture, so the
bootable CD-ROM will not boot directly, as it would do on any IA-32 architecture.
These are the steps to follow for a Red Hat Enterprise Linux AS 3.0 installation:
1. Power on the server and insert the first Red Hat CD-ROM in the drive.
Although it is not necessary to insert the CD at this point, it makes the
installation process easier because the CD-ROM file system is automatically
detected and mapped.
2. Wait for the EFI Firmware Boot Manager menu to appear.
3. Select the first entry for the CD-ROM drive. In the x455, this is the ACPI entry
with the strings “PCI” and “ATA(Primary/Master)”. Press Enter (Figure 4-49 on
page 158).
Installation notes: If you install on a mirrored disk configuration while the
mirror is being created, the SCSI driver detection on the installation program
may take some time. The driver works fine, but it takes longer to load than in a
non-mirrored configuration. You may also notice that the I/O throughput slows
Tip: Official installation instructions are typically available on the Web.
However, at the time of writing none were published for the x455. Once they
are available, they will be accessible at:
Select the x455 (8855) and select OS Installation document type.
IBM employees can access draft installation instructions from:
Chapter 4. Installation 161
To configure your system and select your packages, here are the steps you will
encounter while installing Red Hat EL AS 3.0:
1. A message asking you to test your installation CDs appears. You can test the
disk or just skip to the next step. We recommend that you test your CDs to
avoid problems during the installation.
2. The Red Hat welcome screen appears. The installation procedure is like any
other version of Red Hat Linux.
3. Select the following:
Language Selection.
Keyboard Configuration.
Mouse Configuration.
Disk Partitioning Setup. (We recommend Automatically, which creates a
boot partition that is the EFI System Partition, then the Swap and Root as
Network Configuration.
Firewall Configuration.
Additional Language Support.
Time Zone Selection.
Set Root Password.
Select packages for the installation.
4. Follow the instructions for video card setup and monitor selection.
5. Once the installation is complete, reboot the server.
6. Once the system has rebooted, on the EFI menu select Red Hat Enterprise
Linux AS to start the Linux boot process. This entry will also be configured to
be the default entry to boot, so if you do not press any key, the system will
automatically boot Red Hat Enterprise Linux AS.
Manually starting the CD-ROM: If you did not have the CD-ROM inserted
before the EFI Boot Manager menu loaded, do the following:
1. Insert Red Hat Disk 1 into the drive.
2. Select EFI Shell and press Enter.
3. Enter the command map -r to remap all file systems.
4. Enter exit to go back to the Boot Manager menu.
5. Select the CD-ROM entry Ata(Primary,Master)/CD.

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