Red Hat Enterprise Linux 4: Installation Guide for x86, Itanium™, AMD64, and Intel® Extended Memory 64 Technology (Intel® EM64T)
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# A.2. Upgrading Your System

The Upgrade Examine screen appears if you have instructed the installation program to perform an upgrade.

| Note

If the contents of your `/etc/redhat-release` file have been changed from the default, your Red Hat Enterprise Linux installation may not be found when attempting an upgrade to Red Hat Enterprise Linux 4.

You can relax some of the checks against this file by booting with the following boot command:

    linux upgradeany

Use the `linux upgradeany` command if your Red Hat Enterprise Linux installation was not given as an option to upgrade.

To perform an upgrade, select Perform an upgrade of an existing installation. Click Next when you are ready to begin your upgrade.

To re-install your system, select Perform a new Red Hat Enterprise Linux installation and refer to http://www.redhat.com/docs/wp/ as well as Chapter 4 Installing Red Hat Enterprise Linux for further instructions.

To perform a new installation of Red Hat Enterprise Linux on your system, select Perform a new Red Hat Enterprise Linux installation and refer to Chapter 4 Installing Red Hat Enterprise Linux for further instructions.

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