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How can I upgrade to Ubuntu 11.10 from 11.04 other than online? Thanks for your reply. I have downloaded the iso file but when i run the cdromupgrade script and selected the option not to use t he internet connection .But after some time the upgrade fails stating that no internet connection ,fail to fetch files

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Without any access to the internet, I don't believe there is any way to upgrade. You'll need a copy of installation media and it's not really available in stores. If you can get a friend with internet access to get a copy of the iso, they rip a CD for you or create a USB install.

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Upgrading Using the Alternate CD/DVD

Download the alternate installation CD from http://releases.ubuntu.com/oneiric/

sudo mkdir -p /media/cdrom
sudo mount -o loop ~/Desktop/ubuntu-11.10-alternate-i386.iso /media/cdrom

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 /media/cdrom/cdromupgrade"

Source : here

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I have downloaded the iso file but when i run the cdromupgrade script and selected the option not to use t he internet connection .But after some time the upgrade fails stating that no internet connection ,fail to fetch files –  user16989 Nov 19 '11 at 4:20
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Use the Alternate cd iso to upgrade without network access

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