[Fedora-livecd-list] how to modify a livecd

[Joey Boggs]

On 03/23/2010 08:52 PM, bill pemberton wrote:
> i would like to modify a live cd to have a root and user account and 
> to mount a home directory for the user.  i have taken a fedora 12 iso, 
> broken it apart, made my changes and need to create the bootable iso 
> image.  that is where i'm running into a problem.  i have tried using 
> the grub stage2_eltorito file but that didn't work (maybe the command 
> i copied was incorrect).  i have thought about snagging the first 
> sector (i think that is right) of a good iso and merging that with 
> what i have but i have a feeling that won't work.  from what i can 
> tell i need a boot image file to use but i have not been able to 
> locate one of the correct size (per the mkisofs man page) in the files 
> i have for the iso.  the docs i have been reading today so far haven't 
> indicated where i can find this file and web searches haven't been 
> very fruitful.  since i'm not changing the packages but just the 
> contents of the passwd, shadow, and fstab i would think this would be 
> an easy thing to accomplish.  i have looked into using a persistent 
> image but after waiting nearly an hour for the image to be written 
> (using livecd-creator) i felt that that must not be working correctly 
> either.  i can get an sd card to boot via writing the iso using dd and 
> so far that is the only way to get an sd card or usb drive to boot.  
> so i must be missing something with this livecd-creator (and i think 
> the livecd-iso-to-disk script as well).
>
> the main idea is to have a bootable livecd on an sdcard, use a usb 
> drive for the home dir for a user and this way have a dual boot 
> machine and be able to test different distros from time to time.
>
> would someone mind pointing me in the right direction to accomplish 
> this goal?
>
> -- 
> wapembe
>
>
> --
> livecd mailing list
> livecd at lists.fedoraproject.org
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If putting the iso back together is the biggest problem try the patch I 
sent earlier to the list for edit-livecd. It will mount it and present 
you into the chroot'ed file system and them repackage it all for you as 
an edited iso file.

Here's a link to the script if you want to give it a shot

http://fedorapeople.org/~jboggs/edit-livecd.py

Then you can use livecd-iso-to-disk to write it to disk
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