Upgrading or Installing

The Installation Type dialog (Figure 14-11) presents you with five choices, described below.

Figure 14-11. Installation Type Dialog

Upgrading

If you choose to upgrade and the installation program detects more than one installed Linux version on the system, you'll be asked which version to upgrade. After you indicate this, or if there's only one installed Linux version on the system, the installation program probes your existing system to determine which software packages require updating and presents the Customize Packages to Upgrade dialog (Figure 14-12).

Figure 14-12. Customize Packages to Upgrade Dialog

If you answer No, the installation program starts upgrading existing packages.

Answer Yes if you want to add to or remove items from the list of individual packages to be upgraded. The package selection dialog is seen in the section called Selecting Individual Packages. The upgrade starts when you finish making your changes.

NotePlease Note
 

Some upgraded packages may require that other packages are also installed for proper operation. The upgrade procedure takes care of these dependencies, but in doing so it may need to install additional packages which are not on your existing system.

The upgrade process preserves existing configuration files by renaming them using a .rpmsave extension (e.g., sendmail.cf.rpmsave) and leaves a log telling what actions it took in /tmp/upgrade.log. As software evolves, configuration file formats can change, so you should carefully compare your original configuration files to the new files before integrating your changes.

The next dialog you'll see is Figure 14-40. This dialog remains on the screen until the upgrade is complete.