Custom CDROM on 24.04

[Jerry Geis]

I created a custom boot CDROM for 22.04.3 and it works just fine.

I took that exact same script and am trying to re-do for 24.04

fdisk -l ubuntu-24.04-live-server-amd64.iso
++ grep EFI
++ awk '{print $4}'
+ COUNT=10140
+ dd if=ubuntu-24.04-live-server-amd64.iso bs=512 skip=5370020 count=10140
of=/tmp/efi.img

dd if=ubuntu-24.04-live-server-amd64.iso bs=1 count=446 of=/tmp/mbr.img

xorriso -as mkisofs -r --grub2-mbr /tmp/mbr.img --protective-msdos-label
-partition_cyl_align off -partition_offset 16 --mbr-force-bootable
-append_partition 2 28732ac11ff8d211ba4b00a0c93ec93b /tmp/efi.img
-appended_part_as_gpt -iso_mbr_part_type a2a0d0ebe5b9334487c068b6b72699c7
-c /boot.catalog -b /boot/grub/i386-pc/eltorito.img -no-emul-boot
-boot-load-size 4 -boot-info-table --grub2-boot-info -eltorito-alt-boot -e
--interval:appended_partition_2_start_1039012s_size_10068d:all::
-no-emul-boot -boot-load-size 10068 -o Ubuntu.24.04.LSI.2024.05.02.iso
/tmp/Ubuntu-Server.24.04


When I boot with a VM - it says it failed to load UEFI Misc Device.
No bootable option or device was found

Has something changed to create custom CDROM for 24.04 ?

jerry
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