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| [[Category:Documentation]][[Category:How to]][[Category:PreUpgrade]]
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| PreUpgrade is an application users run on an existing Fedora 8 or above installation, that resolves and downloads packages required to upgrade Fedora. While PreUpgrade downloads the necessary packages, users are free to continue using their systems. This gives an experience similar to a live upgrade.
| | {{admon/warning|Preupgrade is obsolete |Preupgrade does not at present and will not ever work for upgrading to {{FedoraVersion|long|18}}, or any version after that. It was replaced by [[FedUp]], which was itself replaced by the [[DNF_system_upgrade]] plugin.}} |
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| {{admon/tip|PreUpgrade provides an upgrade directly to the latest version of Fedora. It is not necessary to upgrade to intermediate versions. (For example, it is possible to go from Fedora 9 to 11 directly.)}}
| | [[Category:Documentation]] |
| | | [[Category:How to]] |
| To use PreUpgrade to upgrade to a newer Fedora release:
| | [[Category:PreUpgrade]] |
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| # Back up all important data before upgrading as a general best practice.
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| # Run the <code>yum update</code> command as root to make sure all packages are updated to their latest versions.
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| # Preupgrade is installed by default in recent versions. Run the <code>yum install preupgrade</code> command as root to install PreUpgrade otherwise.
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| # Run the <code>preupgrade</code> command as root to start the PreUpgrade application. If you prefer a command line application, run <code> preupgrade-cli </code> instead.
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| # Select the Fedora release you want to upgrade to on the ''Choose desired release'' screen, and click the ''Apply'' button.
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| # When all of the packages have downloaded, reboot your system to start the Fedora installer and upgrade to the next release.
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| After the upgrade is complete:
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| * Some packages may no longer be supported by the new release. These can be identified with:
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| ::<code>package-cleanup --orphans</code>
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| :You may wish to remove these packages because they will no longer get security updates, and they may cause later conflicts with supported packages.
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| * You should examine all ".rpmsave" and ".rpmnew" files created by the upgrade. You may need to manually merge configuration files.
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| For further information, refer to the [[Features/PreUpgrade|PreUpgrade feature page]].
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