UbuntuHelp:UpgradeNotes
来自Ubuntu中文
General Upgrade Information
An upgrade is the process of going from an earlier version of Ubuntu to a newer version of Ubuntu. An example of this would be going from Ubuntu 7.10 (Gutsy Gibbon) to Ubuntu 8.04 LTS (Hardy Heron). Skipping versions is not advised as it may cause damage to your system. If you are using an earlier version, and want to 'skip' a version, the safest way is to backup your data and do a fresh installation, or to progressively upgrade to each successive version. For example if you are running 7.04 (Feisty Fawn) and want to upgrade to 8.04 LTS (Hardy), you would have to first upgrade to 7.10 (Gutsy), and then again to 8.04 LTS (Hardy) or simply do a clean/fresh install of 8.04 LTS (Hardy). An easy way to test a newer version of Ubuntu on your machine for compatibility is trying the Live CD before upgrading. It is generally recommended that you run the latest version of Ubuntu as there is always added support for new hardware, and is usually more optimized/faster. The LTS version is recommended for people in an environment (generally commercial/industrial) that want to keep the same version for a longer amount of time and do not require newer/faster/updated versions, but instead do not want things to change.
To find your Ubuntu version:lsb_release -a
Using packages from repositories not controlled by Ubuntu is not recommended as it can be a security risk and may break or complicate your upgrade. If you have used !EasyUbuntu or Automatix (neither of which is recommended nor supported), you may have problems upgrading to a newer version and may require a fresh install.
If you have trouble downloading only when doing a distribution upgrade, try viewing UpgradeProblems.
Supported (Current) Versions
Supported versions of Ubuntu have finished their testing and are reliable and recommended for every day normal use. This is what you would usually have installed on your machine.
From 8.10 to 9.04
- Version 9.04 (Jaunty Jackalope)
- See the JauntyUpgrades page for upgrading information.
From 8.04 LTS to 8.10
- Version: 8.10 (Intrepid Ibex)
- See the IntrepidUpgrades page for upgrading information.
From 7.10 or 6.06 LTS to 8.04 LTS
- Version: 8.04 LTS (Hardy Heron)
- See the HardyUpgrades page for upgrading information.
From 5.10 to 6.06 LTS
- Version: 6.06 LTS (Dapper Drake)
- See the DapperUpgrades page for upgrading information.
LTS stands for 'Long Term Support', it is supported for three years for desktops and five years for servers. By supported it means that Ubuntu will continue to provide security updates, etc. for the entire term of 'support'.
Beta Versions
Beta versions of Ubuntu are still in development, not yet fully supported, and may contain significant bugs, but skilled and confident users may wish to upgrade in order to provide feedback to the Ubuntu team in advance of the final release. There are currently no beta versions of Ubuntu
Unsupported (Obsolete) Versions
End-of-life releases have been supported previously but have reached the end of their support cycle. It would be best for users of these versions to perform a fresh install of the latest Ubuntu release. Links have been removed since the upgrades between these versions are no longer supported. However, users still trying to do an upgrade on an experimental basis may find suggestions in: https://answers.launchpad.net/ubuntu/+source/update-manager/+question/62184. Upgrading from an EOL to EOL to a supported version is documented here: EOLUpgrades.
7.10
- Version: 7.10 (Gutsy Gibbon)
- EOL: April 18, 2009
7.04
- Version: 7.04 (Feisty Fawn)
- EOL: October 19, 2008
6.10
- Version: 6.10 (Edgy Eft)
- EOL: April 25, 2008
Note that 6.06 LTS (Dapper Drake) is a Long Term Support (LTS) release so is not listed here yet.
5.10
- Version: 5.10 (Breezy Badger)
- EOL: April 13, 2007
5.04
- Version: 5.04 (Hoary Hedgehog)
- EOL: October 31, 2006
4.10
- Version: 4.10 (Warty Warthog)
- EOL: April 30, 2006
