How to upgrade ubuntu linux using alternate cd or iso

Submitted by admin on Wed, 01/02/2013 - 03:29

Open gnome terminal and type below text

user@user-desktop:~$ sudo mount -o loop ~/Desktop/ubuntu-12.04-alternate-amd64.iso /media/cdrom0

If the upgrade dialog is not displayed for any reason, you may also run the following command using Alt+F2:

gksu "sh /cdrom/cdromupgrade"

Or in Kubuntu run the following command using Alt+F2:

kdesudo "sh /cdrom/cdromupgrade"

 

Other method:

Use this method if the system being upgraded is not connected to the Internet.

  1. Download the alternate installation CD  ISO file from http://cdimage.ubuntu.com/precise/daily/current/
    or download via torrant file from here: http://www.ubuntu.com/download/desktop/alternative-downloads and find out "ubuntu-12.04.1-alternate-amd64.iso.torrent" or "ubuntu-12.04.1-alternate-i386.iso.torrent"
  2. 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 mkdir /media/cdrom0
       sudo mount -o loop ~/Desktop/ubuntu-10.04-alternate-i386.iso /media/cdrom0
  3. A dialog will be displayed offering you the opportunity to upgrade using that CD.
  4. 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"

or

sudo sh /media/cdrom0/cdromupgrade

Or in Kubuntu run the following command using Alt+F2:

kdesudo "sh /cdrom/cdromupgrade"

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