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?
I don't know about you but when I have a directory, which is to be made into a LiveCD I just use mkisofs with the isolinux.bin using: /usr/bin/mkisofs -quiet -R -pad -V <volume ID> -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -p myname -x lost+found -no-emul-boot -boot-load-size 4 -boot-info-table -o isoimage dir
The isolinux.bin and boot.cat need to be changed to specify your location of these files if syslinux is installed. Using a SSD card though all you would need to do to create one is grub-install /dev/yourdevice
If you are only making an image I am not sure if livecd-iso-to-disk handles that but it is simple.. with a program c-section I use it just creates two loopback files and uses kpartx to map them, then I grub install to the mapper device and close the filehandle.
This will create a LiveUSB image you can put on any USB flash or SSD card I assume if you preload the SSD controller card modules. Not sure how SSD works exactly, it is flash basically, just might not use USB protocol.
On Tue, Mar 23, 2010 at 5:52 PM, bill pemberton wapembe@gmail.com 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.
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@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/livecd
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
On 03/23/2010 09:57 PM, Joey Boggs wrote:
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
Have the maintainers of livecd-tools had a chance to look at this script? Do you think that we can include this into the livecd-tools package?
-D
livecd@lists.fedoraproject.org
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bill pemberton -
David Huff -
Jasper Hartline -
Joey Boggs