I followed this question (How to create a bootable Ubuntu USB stick Using OS X 10.10.2) to turn the Ubuntu 14.04 ISO to a bootable USB.
I have a MBP (with touchbar) running 10.12.5.
After rebooting while pressing the option key, I don't see the USB drive listed. I only see the SSD listed.
What could be wrong?
The comments suggested my Partition Map was not of the right type. So I erased the USB using Journaled option and select GUID Partition Map. After it's completion (verified with
Diskutil list) I rebooted to see that the USB is still not listed as a bootable option.
Any other ideas?