One reason I did not have problems booting a 19.10 ISO was because I used mkusb installed in 18.04 to create the foundation for the boot disk. This used grub 2.02 to boot 19.10.
One reason I did not have problems booting a 19.10 ISO was because I used mkusb installed in 18.04 to create the foundation for the boot disk. This used grub 2.02 to boot 19.10.