Howto: upgrade from Ubuntu Linux breezy to dapper

last updated in Categories FAQ, Howto, Ubuntu Linux

Before using any one of the following method make sure, you have a backup of important data.

Method # 1

First edit your /etc/apt/sources.list file and replace all word that read as breezy to dapper as root user (type any one of the following command) :

gksudo vi /etc/apt/sources.list


gksudo gedit /etc/apt/sources.list

Save the file.

Type following commands to upgrade from breezy to dapper:

sudo apt-get update
sudo apt-get -y dist-upgrade

Method # 2

Alternatively, Upgrading procedure is extremely simple if you use GUI tool called update-manager to upgrade from previous version. Open terminal and type the following command:

gksudo update-manager -d

Click on check button to upgrade.

Ubuntu Dapper on the Apple Macbook

Check out instructions on installing on Apple’s MacBook.

See also:


Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.

11 comment

  1. You are actually incorrect in the command you posted to upgrade from breezy to dapper.
    ‘gksudo update-manager’ will open up update-manager, but not prompt you to update to a newer major release. This default was requested by Mark Shuttleworth. To display the “new distro available” upgrade option, try this command:
    ‘gksudo update-manager -d’
    Also, this is the “suggested” way to upgrade from breezy to dapper and is what should be first.

  2. Marc,

    They have optimized the kernel so we will get nice speed and thanks for pointing out typo 😀

    Appreciate your post and feedback.

  3. I upgraded to Ubuntu 6 (“Dapper Drake”) from Ubuntu 5 (“Breezy Badger”, which I was already pleased with) and was pleasantly surprised to find that my system is much more responsive than with Breezy. Firefox seems especially snappier. I really like the new GNOME deskbar applet too.

    Also, in your tag line, I think you mean “comprehensive” rather than “compressive”?

  4. please help…. i tried method # 1 and this is what i get…
    tgb@Extra:~$ sudo apt-get update
    Reading package lists… Done
    tgb@Extra:~$ sudo apt-get -y dist-upgrade
    Reading package lists… Done
    Building dependency tree… Done
    Calculating upgrade… Done
    0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
    tgb@Extra:~$ sudo update-manager -d

    why is that so?

    i also tried method #2 but it only says that my system is up-to-date when in fact i only have Breezy Badger version.

    please help.

    many thanks,


  5. Maria,

    Did you modified the your /etc/apt/sources.list file and replace all word that read as breezy to dapper?

  6. Better yet, did you remove the # before all of the http:// lines? if you don;t then apt will not have a clue that it should be looking at the interent to get the updates…

  7. Hello,
    I am trying to upgrade to dapper from breezy. I tried method #2 and got:

    bash: gksudo: command not found

    How do install gksudo? Your post seems to imply that this should be installed by default so I am also wondering why it isn’t in my system already.


  8. Daemmon,

    gksudo is part of Gnome desktop and it should be installed. Try any one of the following:
    kdesu update-manager –d

    Or to install gksudo type the following command:
    sudo apt-get install gksu

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