Installation guide

ROM, or from the DVD. For each CD-ROM (once for the DVD), execute the following com-

mand on a Linux system:

dd if=/dev/cdrom of=/tmp/file-name.iso

• Using ISO images — transfer these images to the system to be installed.

Verifying that ISO images are intact before you attempt an installation, helps to avoid prob-

lems. To verify the ISO images are intact prior to performing an installation, use an md5sum

program (many md5sum programs are available for various operating systems). An md5sum

program should be available on the same Linux machine as the ISO images.

Note

The Red Hat Enterprise Linux installation program has the ability to test the integ-

rity 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: prompt (prepend with elilo

for Itanium systems):

linux mediacheck

Additionally, if a file called updates.img exists in the location from which you install, it is used for

updates to anaconda, the installation program. Refer to the file install-methods.txt in the

anaconda RPM package for detailed information on the various ways to install Red Hat Enter-

prise Linux, as well as how to apply the installation program updates.

6. Preparing for a Hard Drive Installation