Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

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Chapter 6.
67
Troubleshooting Installation on an
Intel
®
or AMD System
This appendix discusses some common installation problems and their solutions.
6.1. You are Unable to Boot Red Hat Enterprise Linux
6.1.1. Are You Unable to Boot With Your RAID Card?
If you have performed an installation and cannot boot your system properly, you may need to reinstall
and create your partitions differently.
Some BIOSes do not support booting from RAID cards. At the end of an installation, a text-based
screen showing the boot loader prompt (for example,
GRUB:
) and a flashing cursor may be all that
appears. If this is the case, you must repartition your system.
Whether you choose automatic or manual partitioning, you must install your
/boot
partition outside
of the RAID array, such as on a separate hard drive. An internal hard drive is necessary to use for
partition creation with problematic RAID cards.
You must also install your preferred boot loader (GRUB or LILO) on the MBR of a drive that is outside
of the RAID array. This should be the same drive that hosts the
/boot/
partition.
Once these changes have been made, you should be able to finish your installation and boot the
system properly.
6.1.2. 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 to it. A signal 11 error may be due to a bug in one of the
software programs that is installed, or faulty hardware.
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. 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. 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. Commonly, these errors are in your memory or CPU-cache. A possible solution
for this error is turning off the CPU-cache in the BIOS, if your system supports this. You could also try
to swap your memory around in the motherboard slots to check if the problem is either slot or memory
related.
Another option is to perform a media check on your installation CD-ROMs. The Red Hat Enterprise
Linux installation program has the ability to test the integrity of the installation media. It works with the
CD, DVD, hard drive ISO, and NFS ISO installation methods. Red Hat recommends that you test all
installation media before starting the installation process, and before reporting any installation-related
bugs (many of the bugs reported are actually due to improperly-burned CDs). To use this test, type the
following command at the
boot:
or
yaboot:
prompt (prepend with
elilo
for Itanium systems):