I found another mode in which the current groovy iso files make bootable drives: 'grub-n-iso' alias isoboot. I can make a bootable USB drive that boots
- both in UEFI and BIOS mode
- both live-only and persistent live
when booting into a 'grub template' and then into an iso file according to the following link,
So this 'grub-n-iso' method works, but a cloned drive from the sane iso file fails (when tested in the same Dell Precision M4800 as used for the tests described above).
I found another mode in which the current groovy iso files make bootable drives: 'grub-n-iso' alias isoboot. I can make a bootable USB drive that boots
- both in UEFI and BIOS mode
- both live-only and persistent live
when booting into a 'grub template' and then into an iso file according to the following link,
https:/ /help.ubuntu. com/community/ Installation/ iso2usb/ isoboot
So this 'grub-n-iso' method works, but a cloned drive from the sane iso file fails (when tested in the same Dell Precision M4800 as used for the tests described above).