I can confirm the bug: USB thumbdrives created by the "Startup Disk Creator" do not boot [1] but USB thumbdrives created by mkusb [2] work.
[1] https://bugs.launchpad.net/bugs/1499746
[2] https://help.ubuntu.com/community/mkusb
I can confirm the bug: USB thumbdrives created by the "Startup Disk Creator" do not boot [1] but USB thumbdrives created by mkusb [2] work.
[1] https:/ /bugs.launchpad .net/bugs/ 1499746
[2] https:/ /help.ubuntu. com/community/ mkusb