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Debian Live is the tool used to generate LiveCD images now for Ubuntu. There is a manual available for it that notes there is an extension that handles producing Ubuntu-style LiveCDs but says very little about what said extensions do. Ubuntu is listed on the downstream projects page yet there is nothing for our usage of Debian Live.

There is a blueprint from the O cycle logged on the wiki logged by Colin Watson. That's the only thing I could find that tangentially talks about this on the wiki. Elsewhere searches just lead back to the web-based copies of manual pages.

The main reason for doing this is to avoid going down the route discussed here of building a bespoke netboot image with a tightly tuned preseed for my BeagleBoard-xM. A way to do this using live-build would be nice. It would also be nice to be able to keep disc images re-spun with updates for those Erie Looking Productions may pick up as collaborators who want to migrate to *buntu.

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I have used live-build in Ubuntu quite a bit. There isn't really an "extension" as such. You can run live-build to create Ubuntu ISO images or img files pretty easily. What specifically are you having trouble with? –  popey Apr 30 '13 at 18:49
    
Mostly I've made ISOs just fine with it. I figured out how to modify the ubuntu-defaults-image wrapper to build Xubuntu and Lubuntu images too. Building an armhf image has been the tricky part thus far that I haven't figured out so I can make a nice image for my BeagleBoard-xM without doing a netboot installation on it instead. The live-build documentation notes, too, that flipping the ubuntu mode flag on changes some behaviors in live-build but sadly never says what actually changes. –  Stephen Michael Kellat Apr 30 '13 at 20:14
    
I just asked Colin Watson about this, knowing he knows live-build well. Unfortunately the cross-building stuff is in live-build 3 but it doesn't seem to be well documented anywhere. You'd have to dig through the live-build source to figure it out. –  popey Apr 30 '13 at 21:33
    
Could you please go ahead and make that an answer I can accept to close out the question then? –  Stephen Michael Kellat Apr 30 '13 at 22:18

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As noted by Alan Pope, there is not currently documentation for cross-building for ARM with live-build and it will be necessary to pore over the source code. The documentation does not exist...yet.

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