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NOTE: CentOS Enterprise Linux 5 is built from the Red Hat Enterprise Linux source code. Other than logo and name changes CentOS Enterprise Linux 5 is compatible with the equivalent Red Hat version. This document applies equally to both Red Hat and CentOS Enterprise Linux 5.

Welcome to the Red Hat Enterprise Linux Installation Guide .

HTML and PDF versions of the guides are available online at


Although this manual reflects the most current information possible, read the Red Hat Enterprise Linux Release Notes for information that may not have been available prior to the documentation being finalized. The Release Notes can be found on the Red Hat Enterprise Linux CD #1, online at, or in the /usr/share/doc/redhat-release-notes-5<variant>/ directory after installation, where <variant> is Server, Client, or Desktop.

1. Architecture-specific Information

This manual is divided into different sections:

Sections One to Three are architecture specific, and give instructions on installing Red Hat Enterprise Linux 5 with specific reference to 32- and 64-bit Intel® and AMD systems, IBM POWER-based systems, and IBM System z architecture systems, respectively.

Section Four deals with Basic System Recovery, and contains some architecture-specific information, as well as information that applies to all architectures.

Section Five contains information on advanced installation topics such as Kickstart, PXE, and Diskless installations.

  Published under the terms of the GNU General Public License Design by Interspire