How to upgrade from Fedora 13 & 14 to Fedora 15

QuestionHow to upgrade from Fedora 13 & 14 to Fedora 15?Fedora-logo



Fedora 15  will be out in few  days , to upgrade from Fedora 13 or 14 to Fedora 15. Please follow  the  steps  as described bellow:

Under root:

1-First, update your current system

yum update -y

2-Install preupgrade package

yum install preupgrade

3-Run the preupgrade tool,




This  will  show  you  the new  release . Now click next to go start  upgrade.  This  step   will  take  some time  to  download  all  packages  of  F15.

After  this,  the  system will  reboot  and  will  complete  the  upgrade  and  clean the old  installations .

Now  login and checkif everything went ok.

[pirat9@localhost ~]$ uname  -a
Linux localhost.localdomain #1 SMP Fri May 6 08:00:28 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[pirat9@localhost ~]$ cat  /etc/redhat-release
Fedora release 15 (Lovelock)
[pirat9@localhost ~]$

  • cheerio


  • SK Saini

    no Groups available in any repository while upgrading from Fedora 13 to Fedora 15, please help

  • mizo

    SK Saini
    you have to upgrade first from 13 –>14
    then from 14—>15

  • Stig

    If you are behind a proxy, then you need to:
    export http_proxy=http://{proxy-server}:{port}
    export ttp_proxy=http://{proxy-server}:{port}
    export https_proxy=http://{proxy-server}:{port}

    Then run preupgrade/preupgrade-cli.


  • jeff TANG

    I did according your advice. after download all packges of F15, then the system reboot, until the step "trying to unpack rootfs image as initramfs…" it cannot going on.
    also when I use fedora 15 netinst CD to install ,the same situation happen.
    Please tell how to solve the problem.

  • qbert

    Thanks. I now have F15!

  • Anonymous

    "After this, the system will reboot and will complete the upgrade and clean the old installations" .
    For my situation, I would like yo say:
    reboot yes
    complete the upgrade no
    it stop at "trying to unpack rootfs image as initramfs…"
    please help!

  • selva

    thank u i cleared my doubt

  • Manish Kumar

    how can i upgrade from FC12 to FC14/FC15. Can we follow the similar steps as mentioned above.Please help.

  • Stig

    You cannot upgrade directly from FC12 to FC15. You can jump max 2 versions at any one upgrade.
    Start by upgrading to FC14 – then upgrade to FC15.
    Apart from that, I guess you can follow the above advices.

  • Inda

    Thank you :-)))

  • Phanisundar


              i tried this, After reboot i am not able to login to my system after upgrading to 15. all my old password are not working.