[Fedora-livecd-list] RFE: allow multi live medium

[Douglas McClendon]

Jeremy Katz wrote:
> On Thu, 2008-11-27 at 22:51 +0100, Till Maas wrote:

>>> 2) How do we want to namespace so that we can better support multiples
>>> and have them identifiable?
>> I guess the easiest way would be to use the name of the iso/torrent file for 
>> each live image, e.g.:
>>
>> LiveOS/F10-i686-Live
>> LiveOS/F10-i686-Live-KDE
>>
>> or even seperate directories in the root of the filesystem. 
> 
> This could work and is definitely better than some of the other things
> that have been suggested in the past.  It'd require keeping some
> knowledge of the original label/filename when we do the transform in
> livecd-iso-to-disk/liveusb-creator.  And if go this route, it probably
> makes the most sense to do it in all cases and not just as a special
> case.

FWIW, the method I opted for in my viros project was to pass the 
label/filename as a kernel boot cmdline parameter.  It's not that 
complicated.

>> What I would 
>> really enjoy would be a generic bootloader that would recognize any iso image 
>> on the medium and would allow to chainboot them. I believe at least 
>> chainbooting iso images is possible with grub2, but I did not yet test it.

Yes, that would be cool, and I do think I tried this with grub2 a long 
time ago.  I'm pretty sure you still need initrd/bootscript support, as 
I don't think the chainloader does quite so much magic that the 
resulting OS sees a virtual cdrom drive.  I.e. the initrd/bootscript 
still needs extra logic to dig into the specific iso and get at its 
specific rootfs.

-dmc