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I just used Finder File|Burn Disk Image on an ubuntu installation ISO. It completed yet it at least seems to not be bootable. When I place it in the boot USB drive and restart the linux laptop it reads the USB drive then punts on it and just shows Grub boot options screen (as loaded from the hard disk). When I then start ubuntu and open the DVD that way it shows the .iso as a file.

So two questions:

  • is there a way to check a DVD to see whether it were bootable
  • If as I suspect this process did not create a bootable DVD then what should I do differently on the burning process (from Mac) to obtain that result?
  • Maybe this page will help. These instructions use the macOS Disk Utility app, which is technically the same as the Finder method. There may be other problems as well. – IconDaemon May 25 at 20:32
  • I'm voting to close this question as off-topic because although the .iso DVD burning procedure takes place under macOS, the problem as described occurs on non-Apple hardware and software. – IconDaemon May 25 at 20:34
  • It should be a valid question to ask how to burn a bootable dvd on macos : and in particular that is the system being used for that purpose. The target of the bootable iso may or may not be a different O/S. – javadba May 25 at 22:19
  • Your question about how to burn a DVD on macOS is valid, but unfortunately, the end result does not work on a non-Apple system. From what information I can glean from your question, and from the links I provided in my first comment, you are burning the .iso correctly from a macOS perspective - there are very few options you can try. I will remove my vote to close, though. – IconDaemon May 26 at 1:37

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