Now we will see how to upgrade your Ubuntu to 7.04 or 8.04 (Hardy)

First thing i would suggest is backup all your important data and start upgrade process and you can use any one of the method to udgrade to ubuntu edgy eft.

We can Use Two methods to upgrade Ubuntu Dapper to Edgy

1) Using GUI

2) Using apt-get

Upgrading Ubuntu

Method 1

Using GUI

If you want to upgrade using GUI use the following command

gksu “update-manager -c ”

“-c” switch tells it to look for upgrades at all.You should see the following screen here Now you can see 6.10 is available for upgrade click on upgrade

Now you can see the following screen with the no.of packages available for download here click on start upgrade

Here it starts preparing the upgrade

You can see in this screen downloading required packages is in progress

Installing all the required packages in progress

After installing these packes you should see the following screen and here you need to click on restart and it will reboot your machine to take your new ubuntu 6.10 installation to effect all changes.

You can check the ubuntu version installed using the following command

sudo lsb_release -a

Output Looks like below

Distributor ID: Ubuntu
Description: Ubuntu edgy
Release: 6.10
Codename: edgy

Method 2

Using apt-get

Edit your /etc/apt/sources.list as root. Change every occurrence of dapper to edgy.

Use any prefered editor. If you have a CD-ROM line in your file, then remove it.

sudo vi /etc/apt/sources.list

or

use the following Simple command

sudo sed -e ’s/\sdapper/ edgy/g’ -i /etc/apt/sources.list

Now you need to update the source list using the following command

sudo apt-get update

Upgrade using the following command

sudo apt-get dist-upgrade

Double check your process was finished properly using the following commd

sudo apt-get -f install

sudo dpkg --configure -a

Now you need to Reboot your machine to take your new ubuntu 6.10 installation to effect all changes.

I hope you will enjoy your new Ubuntu Edgy Eft

_________

Another post regarding how to upgrade from Dapper to Hardy

Here is how I did it:

Ubuntu 6.06 to Ubuntu 8.04 Upgrade (Server)

I verified that my current install was completely up to date:

sudo aptitude update
sudo aptitude upgrade
sudo aptitude dist-upgrade

Also, to be thorough, this is what my sources.list looked like (each ‘deb’ entry should be one single line):

deb http://archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu dapper-updates main restricted universemultiverse
deb http://archive.ubuntu.com/ubuntu dapper-security main restricted universemultiverse
deb http://archive.ubuntu.com/ubuntu dapper-proposed main restricted universemultiverse
deb http://archive.ubuntu.com/ubuntu dapper-backports main restricted universemultiverse

Once I had applied all updates (if you’re already up to date, you don’t need a reboot) I then installed the server-based update utility:

sudo aptitude install update-manager-core

Once this is installed you’re ready to begin the upgrade process.  You can start the upgrade using:

sudo do-release-upgrade

Or use CD-ROM
$ mount -t iso9660 -o loop ~bvi/ubuntu-8.04-server-i386.iso /cdrom
$ apt-cdrom add

This should show output similar to the following as the CDROM is added to the Repo list.

Using CD-ROM mount point /cdrom/
Unmounting CD-ROM
Waiting for disc…
Please insert a Disc in the drive and press enter
Mounting CD-ROM…
Identifying.. [b36baea778d37bbf48a3c8bd75b5cffb-2]
Scanning disc for index files..
Found 2 package indexes, 0 source indexes and 1 signatures
Found label ‘Ubuntu-Server 8.04 _Hardy Heron_ – Release i386 (20080423.2)’
…

And should add a to the top of your /etc/apt/sources.list similar to the following:

deb cdrom:[Ubuntu-Server 8.04 _Hardy Heron_ – Release i386 (20080423.2)]/ hardy main restricted

Finally the update can be performed

do-release-update