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I'm trying to do automated installation using preseeding from url, but it failed.

Basically, I'm following

Ubuntu Server Quick Install, No Questions Asked!

Using the Ubuntu 12.04 desktop ISO, and append the following options to the kernel command line (ESC, then F6 at the boot screen):

priority=critical locale=en_US url=

The installation should proceed from start to finish, but mine failed at the first step resolving

what's wrong?

I also tried to add auto, as per ie., appending

priority=critical locale=en_US auto url=

but still, can't resolve

How can I fix it?

PS. this is run from within VirtualBox.

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Have you tried it without using to shorten the links? – Mateo Mar 27 '13 at 20:52

Modifying the desktop ISO with ISO Master works for me.

  1. Run ISO Master in the bottom pane.

  2. Open the isolinux directory.

  3. Edit the txt.cfg file.

    I added the following entry (changed the url though)

    default live
    label live
    menu label ^Autoinstall
    kernel /casper/vmlinuz
    append  url= automatic-ubiquity boot=casper initrd=/casper/initrd.lz quiet splash noprompt auto=true --
  4. Save the image and try it.

I assume setting the kernel options manually should work as well. Make sure you have set the VirtualBox network settings correctly (e.g useing NAT).

share|improve this answer
What are you linking to with, this is confusing, and using link shortening services is frowned upon. – Mateo Mar 27 '13 at 20:13

Change the network adapter mode in virtualbox to 'Bridge' instead of NAT. Sometimes NAT doesn't get you proper networking access, and therefore your DNS lookup will fail.

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