^ Please ignore my last comment, it still works just doesn't show grub menu and requires more patience before something useful appears on screen.
FWIW, i've created a script for downloading/unpacking mini.iso adding UEFI support https://gist.github.com/pmartycz/74da258f6d876862b88caa9b4026b1c2 E.g. $ ubuntu-mini-iso-uefi focal Then you can just move files from focal/ to your FAT formatted boot media. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1429030 Title: netboot mini.iso doesn't support UEFI boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1429030/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs