Troubleshooting Your Installation Of Red Hat Enterprise Linux; You Are Unable To Boot Red Hat Enterprise Linux; Is Your System Displaying Signal 11 Errors; Trouble During The Installation - Red Hat ENTERPRISE LINUX 4 - INSTALLATION GUIDE FOR IBM S-390 AND IBM ESERVER ZSERIES Installation Manual

Appendix D. Troubleshooting Your
Installation of Red Hat Enterprise
Linux
This appendix discusses some common installation problems and their solutions.

1. You are Unable to Boot Red Hat Enterprise Linux

1.1. Is Your System Displaying Signal 11 Errors?

A signal 11 error, commonly know as a segmentation fault, means that the program accessed a
memory location that was not assigned.
If you receive a fatal signal 11 error during your installation, it is probably due to a hardware
error in memory on your system's bus. A hardware error in memory can be caused by problems
in executables or with the system's hardware. Like other operating systems, Red Hat Enterprise
Linux places its own demands on your system's hardware. Some of this hardware may not be
able to meet those demands, even if they work properly under another OS.
Ensure that you have the latest installation updates and images from Red Hat Inc.. Review the
online errata to see if newer versions are available. If the latest images still fail, it may be due to
a problem with your hardware.
You can also try running the installation with only 256 MB of memory. This can be done by
booting the installation program with the
installation boot prompt, type:
where should be replaced with the amount of memory in megabytes.
xxx

2. Trouble During the Installation

2.1.
No devices found to install Red Hat Enterprise Linux
If you receive an error message stating
, then there may be an issue with your DASD devices. If you encounter this error, add the
Linux
parameter to your
DASD=<disks>
installation), and start the install again.
Additionally, make sure that you format the DASDs using the
root shell, instead of formatting the DASDs using CMS.

2.2. Trouble with Partition Tables

If you receive an error after the Disk Partitioning Setup
boot option. To try this option, at the
mem=256M
No devices found to install Red Hat Enterprise
file (where
parm disks
Error Message
is the DASD range reserved for
command within a Linux
dasdfmt
(Section 8, "Disk Partitioning Setup")
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