How to get HTTP preseed to work correctly on Ubuntu 10.04 LTS (Lucid)?

Posted by netvope on Server Fault See other posts from Server Fault or by netvope
Published on 2010-05-19T08:49:33Z Indexed on 2012/11/02 23:05 UTC
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Installation media: ubuntu-10.04-desktop-i386.iso

I tried a lot of different boot parameters, but either the installer ignored the preseed configuration, or it boot itself directly as LiveCD.

An example of the boot parameters I've tried:

auto url=http://mydomain.com/path/preseed.cfg boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --

If I remove only-ubiquity, it boots as a LiveCD. If I remove boot=casper, it won't boot. If I add vga=normal locale=en_US console-setup/layoutcode=us console-setup/ask_detect=false interface=auto, it still can't do automatic install. If I remove auto, it's the same.

What is the correct boot parameters for launching such an installation?

From the apache log of the server hosting preseed.cfg, I see that the installer has no problems fetching the preseed file. My preseed file is almost identical to the one at https://help.ubuntu.com/10.04/installation-guide/example-preseed.txt. Moreover, I have run debconf-set-selections -c preseed.cfg to ensure that the preseed file is correct.

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