error: file /boot/ not found

[jasona7783]

I am trying to install Ubuntu 18.04 on a Macbook Pro. I downloaded the file and used Etcher to flash it to a USB from within Windows 10. I booted it up on the Mac. When I selected the drive and clicked to continue, I got the message; "error: file /boot/ not found." Then it goes to a blank screen. I then tried to write the file to a DVD and try booting from it but I got the same response. I had Ubuntu on this Mac in the past so I do not know what is going on. Will someone please help?

[slickymaster]

Thread moved to Apple Hardware Users for a better fit