Red Hat Enterprise Linux Installation Guide 5.2 - linux.meuhobby.com

Chapter 23. Upgrading Your Current System
Note
It is always a good idea to back up any data that you have on your systems. For
example, if you are upgrading or creating a dual-boot system, you should back
up any data you wish to keep on your hard drive(s). Mistakes do happen and can
result in the loss of all of your data.
Some upgraded packages may require the installation of other packages for proper operation. If
you choose to customize your packages to upgrade, you may be required to resolve
dependency problems. Otherwise, the upgrade procedure takes care of these dependencies,
but it may need to install additional packages which are not on your system.
Depending on how you have partitioned your system, the upgrade program may prompt you to
add an additional swap file. If the upgrade program does not detect a swap file that equals twice
your RAM, it asks you if you would like to add a new swap file. If your system does not have a
lot of RAM (less than 256 MB), it is recommended that you add this swap file.
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 5.0.0.
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 on Intel® and AMD
Systems, Chapter 12, Installing on IBM System i and IBM System p systems, or Chapter 17,
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