Using Iso Images For Nfs Installs; Preparing For A Hard Drive Installation - Red Hat ENTERPRISE LINUX 3 - INSTALLATION GUIDE FOR IBM S-390 AND IBM ESERVER ZSERIES Installation Manual

Chapter 1. Steps to Get You Started
FTP and HTTP installations also support a second type of tree structure. To make it easier to access
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the contents of the installation CD-ROMs, mount each CD-ROM or ISO image with the following
mount point on the FTP or HTTP server (where X is the number of the CD-ROM or ISO image):
/location/of/disk/space/discX/
For example:
mount -o loop CD1.iso /location/of/disk/space/disc1/

1.3.1. Using ISO Images for NFS Installs

NFS installations can use ISO (or CD-ROM) images rather than copying an entire installation tree.
After placing the required ISO images (the binary Red Hat Enterprise Linux CD-ROMs) in a directory,
choose to install via NFS. You will then point the installation program at that directory to perform the
installation.
Verifying that the ISO images are intact before you attempt an installation will help to avoid problems
that are often encountered during an NFS installation. To verify the ISO images are intact prior to
performing an installation, use an
operating systems). An
Additionally, if a file called
be used for installation program updates. Refer to the file
RPM package for detailed information on the various ways to install Red Hat Enterprise Linux, as
well as how to apply the installation program updates.
Note
You can only have the ISO images for one release and one variant of Red Hat Enterprise Linux in the
directory.

1.4. Preparing for a Hard Drive Installation

Hard drive installations require a working Linux system installed and the use of ISO (or CD-ROM)
images rather than the entire installation tree.
Hard drive installations only work from ext2 or ext3 file systems.
Set of CD-ROMs — Create CD-ROM ISO image files from each installation CD-ROMs. For each
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CD-ROM, execute the following command on a Linux system:
dd if=/dev/cdrom of=/tmp/file-name.iso
This command may raise an error message when the end of data on the CD-ROM is reached which
can be ignored. The ISO images created can now be used for installation, once copied to the correct
DASD.
ISO images — transfer these images to the system to be installed (or to the correct DASD).
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Verifying that ISO images are intact before you attempt an installation, helps to avoid problems.
To verify the ISO images are intact prior to performing an installation, use an
(many programs are available for various operating systems). An
md5sum
be available on the same Linux machine as the ISO images.
Make the correct DASDs accessible to the new VM or LPAR, and then proceed with installation.
program (many
md5sum
program should be available on the same server as the ISO images.
md5sum
exists in the directory from which you install, then it will
updates.img
programs are available for various
md5sum
install-methods.txt
md5sum
3
in the
anaconda
program
md5sum
program should