Installation guide

s390x Architectures

4. To verify that recording is enabled, the text above the ADCMux field should display L R

CAPTUR.

• The size of the PPC kernel image is too large for OpenFirmware to support. Consequently, network

booting will fail, resulting in the following error message:

Please wait, loading kernel...

/pci@8000000f8000000/ide@4,1/disk@0:2,vmlinux-anaconda: No such file or

directory

boot:

To work around this:

1. Boot to the OpenFirmware prompt, by pressing the '8' key when the IBM splash screen is

displayed.

2. Run the following command:

setenv real-base 2000000

3. Boot into System Managment Services (SMS) with the command:

0> dev /packages/gui obe

9.5. s390x Architectures

• When running Red Hat Enterprise Linux 5.2 on a z/VM that has more than 2GB of guest storage

defined, invalid data can be read from and written to any FCP and OSA device attached in QDIO

mode with the Queued-I/O assist (QIOASSIST) option enabled. If your system has any such devices

attached, Red Hat recommends that you download and install the corresponding z/VM Program

Temporary Fix (PTF) from the following link:

http://www-1.ibm.com/support/docview.wss?uid=isg1VM64306

• It is not possible to directly read and convert a z/VM dump into a file. Instead, you should first copy

the dump from the z/VM reader into a Linux file system using vmur and convert the dump into a

Linux-readable file using vmconvert.

• The IBM System z does not provide a traditional Unix-style physical console. As such, Red Hat

Enterprise Linux 5.2 for the IBM System z does not support the firstboot functionality during initial

program load.

To properly initialize setup for Red Hat Enterprise Linux 5.2 on the IBM System z, run the following

commands after installation:

• /usr/bin/setup — provided by the setuptool package.

• /usr/bin/rhn_register — provided by the rhn-setup package.