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I am attempting to edit a Fedora 19 DVD ISO to add a kickstart file. I then need this ISO burnt to a USB stick for instillation.

The error I get when booting is 

Warning: Could not boot.
Warning: /dev/root does not exist

To try and determine which part of the process is failing I have broken the process down in to separate stages.

Step 1:

Burn the original ISO "Fedora-19-x86_64-DVD.iso" (Available -> here) to a pendrive and see if that will install.

dd if=/path/to/iso of=/dev/sdc

Burning this image was successful and it installed without issue.

Step 2:

Exctract the ISO, repackage it and burn it to a pendrive and see if that will install. PLEASE NOTE: The final command in this section has been broken down in to multiple lines for ease of reading, in fact it was run as a single command on one line.

mkdir -p /mnt/linux
mount -o loop /tmp/linux-install.iso /mnt/linux

cd /mnt/
tar -cvf - linux | (cd /var/tmp/ && tar -xf - )

cd /var/tmp/linux

xorriso -as mkisofs -R -J -V "NewFedoraImage" -o ouput/file.iso 
-b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 
-boot-info-table -isohybrid-mbr /usr/share/syslinux/isohdpfx.bin .

This iso was then burnt to a pendrive as before.

dd if=/path/to/iso of=/dev/sdc

This ISO burnt to the pen drive with no problem and will boot. I then see the fedora options screen. After choosing either "Install Fedora 19" or "Test this media & install Fedora 19" I then receive the errors highlighted above.

This means the kickstart file is not to blame, but repackaging the ISO. Is there something I am missing in the repackaging process?

Any input would be great!

NOTE: If it is of any help, I attempted Step 2 with an Ubuntu server ISO and the process was successful.

dooffas
  • 325

3 Answers3

9

i guess it is because you have chosen a new Volume Id by -V "NewFedoraImage".

I am the developer of xorriso and have experienced a similar problem when experimenting with GPT enhanced isohybrid in Fedora-LiveCD.iso. It did not work unless i used the same -V as with the original image. In an old mail text of mine i see a reference to "/dev/disk/by-label/".

To learn about the original Volume Id, you may do:

  xorriso -indev Fedora-19-x86_64-DVD.iso 2>&1 | grep 'Volume id'

(Leave out "2>&1 | grep 'Volume id'" if you don't get any output)

squillman
  • 38,163
Thomas Schmitt
  • 231
0

A quick workaround: https://ask.fedoraproject.org/en/question/10795/minimal-install-boot-results-in-devroot-does-not-exist/

In case that link disappears: Upon booting from the USB drive, at 1st screen hit TAB to get the grub command line. Remove the label that says something like 'Fedora-22-xxx' and replace by the label of your USB drive/stick, in several cases I have seen it is "LIVE".

David Ramirez
  • 417
0

To make the image also boot on UEFI bios, include

-eltorito-alt-boot -e images/efiboot.img -isohybrid-gpt-basdat

So the command will look like:

xorriso -as mkisofs -R -J -V "NewFedoraImage" -o ouput/file.iso \ 
-b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot \
-boot-load-size 4 -boot-info-table -eltorito-alt-boot \
-e images/efiboot.img -isohybrid-gpt-basdat -no-emul-boot \
-isohybrid-mbr /usr/share/syslinux/isohdpfx.bin .

But this still leaves booting on macs out

Peter
  • 919