PreUpgrade is an application you can use to upgrade Fedora while continuing to use it. PreUpgrade downloads the packages required for the upgrade. Once everything is downloaded and set up, you will be notified that you can reboot at any time to start the Fedora upgrade. This method of upgrading is explicitly tested and supported by Fedora. To read more, refer to PreUpgrade.
通过Yum来跨版本升级也是个不错的方法，但是本方法尚未被Fedora QA小组明确测试通过。本方法也许不会导致升级失败。由于打包指南在升级维护方面提供了很详细的信息，绝大多数用户可以尝试。具体信息位于： 用Yum升级Fedora指南。
从一个不稳定的发行版升级到稳定版(比如alpha, beta, release candidate版本或者其他开发版本)
- It's a good idea to have a backup of your system before performing an upgrade. Keeping
/homein a separate logical volume or partition makes backing up user data easier. This is a feature requested for the Fedora Installer. Refer to Bug 150670 for more on this issue. This is the default from Fedora 13 onwards.
- Doing a clean installation and then restoring user data from backups may work better for some users. Future releases may include features to assist in this process. Refer to AnacondaWorkItems for more information.
- You can do an upgrade using the regular installation DVDs. Live media only performs fresh installations, not upgrades. The installation overrides any third party packages which conflict with the default installation set. Applications within the Fedora repository are easily upgradeable. Refer to the Installation Guide for more information.
- Make sure you read the Release Notes carefully before attempting an upgrade.