A huge thanks to Thomas Schmitt for posting xorrisofs arguments :) Here is a lorax PR switching to grub2 for BIOS and changing the layout of the iso as described in his post: https://github.com/weldr/lorax/pull/1226 And a Fedora 36 iso: https://bcl.fedorapeople.org/boot-grub2-f36.iso I've tested this with: - qemu bios -cdrom - qemu uefi -cdrom - qemu bios -hda - qemu uefi -hda - USB stick on uefi PC hardware with SB off - USB stick on UEFI PC hardware with SB on - USB stick on Apple hardware UEFI 2010 Macbook Air and 2012 Macbook Pro - Media test works on all of the above I have not tested it on CD or DVD physical media. I have a stack of blank discs but apparently have unplugged all my drives to use their SATA ports for SSDs :) Brian -- Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure