You can directly upgrade to Ubuntu 10.04 LTS Beta 1 (“Lucid Lynx”) from Ubuntu 9.10 (“Karmic Koala”) or from Ubuntu 8.04 LTS (“Hardy Heron”). This page contains instructions for both.
Upgrade from 9.10 to 10.04 LTS Beta:
You can easily upgrade over the network with the following procedure.
- Open teminal or press Alt-F2 and type update-manager --devel-release
- Click the Check button to check for new updates.
- If there are any updates to install, use the Install Updates button to install them, and press Check again after that is complete.
- A message will appear informing you of the availability of the new release.
- Click Upgrade.
- Follow the on-screen instructions.
Upgrade from 8.04 LTS to 10.04 LTS Beta
You can easily upgrade over the network with the following procedure.
- Press Alt-F2 and type update-manager --devel-release
- Click the Check button to check for new updates.
- If there are any updates to install, use the Install Updates button to install them, and press Check again after that is complete.
- A message will appear informing you of the availability of the new release.
- Click Upgrade.
- Follow the on-screen instructions
Or if you don’t have super speed internet connection, you may prefer upgrading from the Alternate CD :
Upgrading Using the Alternate CD/DVD
Use this method if the system being upgraded is not connected to the Internet.
- Download the alternate installation CD (PC (Intel x86) alternate install CD or 64-bit PC (AMD64) alternate install CD)
- Burn the ISO to a CD and insert it into the CD-ROM drive of the computer to be upgraded.
- If the ISO file is on the computer to be upgraded, you could avoid wasting a CD by mounting the ISO as a drive with a command like:
sudo mount -o loop ~/Desktop/ubuntu-10.04-beta1-alternate-i386.iso /media/cdrom0
- If the ISO file is on the computer to be upgraded, you could avoid wasting a CD by mounting the ISO as a drive with a command like:
- A dialog will be displayed offering you the opportunity to upgrade using that CD.
- Follow the on-screen instructions.
If the upgrade dialog is not displayed for any reason, you may also run the following command using Alt+F2:
gksu "sh /cdrom/cdromupgrade"
Happy Beta Testing!











