Great ! Thanks a lot for the details :)
I think at least the creation of the repo can be simplier, but it seems already 
quite good.

Julien Lavergne

On Mon, 18 Oct 2010 18:24:25 +0200
Leszek Lesner <> wrote:

> Am 18.10.2010 15:25, schrieb Julien Lavergne:
> > On Mon, 18 Oct 2010 10:59:06 +0200
> > Leszek Lesner <> wrote:
> >
> >   
> >> I created a Install CD by simply creating a minimal install CD plus a 
> >> repo. Unfortunetly the Installation fails after installing the base 
> >> system, because it tries to install a package called lubuntu-desktop^ in 
> >> the tasksel process which it cant find. I tried this with the modified 
> >> tasksel version of yours. I even checked the modification you made but 
> >> cant find the error. 
> >>     
> > I'm not sure I made the correct fix for tasksel, it probably needs another 
> > fix somewhere. But I interesting to know how you made the initial CD, 
> > because I only find how doing an iso with squash filesystem, but not with 
> > .deb packages.
> >   
> Ok I see it wasn't quite the right fixes you made as the last line in
> lubuntu-desktop from the ubuntu-tasks folder contains
> > Packages: task-fields
> This would as far as I understand connect to the ubuntu server and
> search for a corresponding task. But there isn't one.
> > Packages: list
> >   lubuntu-desktop
> works much better and fixes the error I got before.
> To create the CD I basically took the xubuntu alternate cd. Then I
> copied over the whole ISO and put it into one directory(lets call it
> cd-img). Replaced the isolinux folder with the fancy isolinux folder
> from the livecd with the cool looking logo png and where you can set
> language with F2 and with F3 the keymap and so on.
> The first thing that I did afterwards was taking the xubuntu.preseed
> file that ships with the xubuntu-10.10-alternate-i386.iso and changing
> it basically from xubuntu-desktop to lubuntu-desktop(I know there is a
> lubuntu.seed file on the live cd but I took the one from the other
> alternate cds as they were more entries and I didn't want to mess ups
> things). Then I put this preseed file back to my copy of the minimal
> install cd(so the cd-img folder) into the preseed folder.
> I did change the txt.cfg file in isolinux so that the default option
> would boot with the preseed file option of the lubuntu.seed .
> Then the little bit more tricky part create a repository. For creating
> this repository I know that I need every package that needs to be
> installed when installing lubuntu-desktop. Every means every , so also
> xorg and those other stuffs. As I had a Minimal Install ISO aswell I
> simply created a minimal installed cli only system in virtualbox and
> apt-get install(ed) lubuntu-desktop. All the required deb files are
> stored in /var/cache/apt/. The only thing to do now is getting those deb
> files outside the virtual machine. Then there is a cool package called
> apt-move which is pretty handy as it can automatically copy or move
> those deb files in a repository like hierarchical folder view. So it
> will create automatically the structure of a repository that you need,
> by putting in lubuntu-desktop for example  in a
> pool/l/lubuntu-meta/lubuntu-desktop_xXX-i386.deb file/folder structure.
> By default this repository structure will be put into /mirrors/debian so
> you need root right to run apt-move. But I guess the default folder is
> changeable I just was to lazy to read the manpage ;)
> Then we copy over the pool directory to the cd-img folder. Again me as
> being lazy I didn't overwrite all the packages that where already in the
> xubuntu pool directory (they can be deleted later I guess or you can
> delete the whole pool directory with the exception of the udeb files. So
> 'find . -name "*.udeb"' and copy over all udeb files as they are
> necessary for the installer). Then we have the pool directory almost
> ready. I had to repackage the ubuntu-keyring package as I don't have the
> private key to sign the cd and the new repository with official ubuntu
> keyring. So I downloaded the keyring and added my own private key to it.
> This step is really important because otherwise the installer won't
> install if the repo isn't signed. So I repackaged this package and put
> it into the pool structure unter u/ubuntu-keyring I think it was.
> That should be all for the pool directory. Basically we need the Release
> and Packages.gz file for the repository now and sign it.
> So I created a release.conf file ( storing the basic info like distro
> name , codename and main + universe repos) and a config file you can see
> here to get an Idea how it works:
> This is basically the file that will scan the pool files and create the
> Packages.gz for each repo (means main and universe).
> As you can see here you need also some override files that you can get
> from here:
> As the above config file will only create a package listing for debs I
> created also a config which scans all the udebs.
> Here is the config:
> As you can see I basically only replaced the deb with udeb :)
> Now we have all the config files lets build the packages and release
> files with:
> > apt-ftparchive -c /path/to/release.conf generate 
> > ../apt-ftparchive/apt-ftparchive-deb.conf
> > apt-ftparchive -c /path/to/release.conf generate 
> > ../apt-ftparchive/apt-ftparchive-udeb.conf
> > apt-ftparchive -c /path/to/release.conf release 
> > path/to/cd-img/dists/maverick > path/to/cd-img/dists/maverick/Release
> > gpg --default-key "YOURKEYID" --output 
> > path/to/cd-img/dists/maverick/Release.gpg -ba 
> > path/to/dists/maverick/Release   #This will sign the Releasefile
> >   
> Then you can simply update the md5sums.txt :
> find . -type f -print0 | xargs -0 md5sum > md5sum.txt
> And this is basically all. Of course you can edit .info directory and
> the files in there to change them so that the CD Label will change to
> Lubuntu .... rather then Xubuntu. Rebuild the ISO with mkisofs and you
> have it ready the Lubuntu Alternate Install CD :)
> I can also upload my version of the image somewhere so you don't need to
> do everything by hand ;)
> Hope that answers you questions. I also didn't found a documentation
> which explains or does this building of the alternate cd easier.
> Regards,
> Leszek

Julien Lavergne <>

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