can anyone tell me how to upgrade from ubuntu 12.04 to 12.10 from a Cd
Ubuntu – How to upgrade from 12.04 to 12.10 using CD
12.0412.10upgrade
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It's bad news, I'm afraid. Canonical removed the ability to upgrade using CD/DVD images from the 12.10 release.
All of the instructions I have seen for upgrading to 12.10 only talk about a network installation, usually using the Update Manager. See the 12.10 release notes. It is also mentioned in the 12.10 Beta2 Technical Overview, and there are lots of comments and complaints out there on the net.
you have chosen to upgrade only LTS, or this is the default configuration with any Ubuntu LTS releases.
check your preferences, and change it as follows,
software sources > updates (tab) > "notify me of a Ubuntu version" > choose "For any new version"
Best Answer
Prior to Ubuntu 12.10 you can able to upgrade your Ubuntu OS with the help of Ubuntu Alternate CD. But with the release of Ubuntu 12.10 Steve Langasek from Canonical announced on August 27th, a proposal to drop the Alternate CD ISO images starting with the upcoming Ubuntu 12.10 (Quantal Quetzal) operating system. On August 30th, the Alternate CDs were gone from the daily builds and will not be available at the launch of Ubuntu 12.10 Beta 1. For more information your can go through following link
Proposal to drop Ubuntu alternate CDs for 12.10
In case you want to upgrade from the disk which you have downloaded from the internet then follow below steps
Step 1. Boot with Ubuntu 12.10 Disk
Step 2. Select Install Ubuntu Option
Step 3. On the installation type screen choose Upgrade Ubuntu 12.04.1 LTS to Ubuntu 12.10
In this option "Document, music and other personal files will be kept. Installed softwares will be kept where possible. System-wide settings will be cleared."
Kindly Note that as a safer side kindly take the backup of your data.
In case you want to update your Ubuntu OS using update manager then follow below post
How to Upgrade / Update Ubuntu OS to Ubuntu 12.10 (Quantal Quetzal) from 12.04, 11.04, 11.10