Cannot create Ubuntu DVD on Mac OSX 10.13.6 (High Sierra)

Hi, I am trying to recover an old-ish PC (no USB boot…), but Etcher will not accept any new, fresh DVD. it claims the units are both “locked” and “Too small” (also tried with Linux Mint, about 350Mb).

It could be just that Etcher does not work with optical drives anymore, am I doing something wrong?

Welcome to the forums, Alberto!

I don’t think writing to optical disks was ever supported by balenaEtcher (see this GitHub issue, for example). Perhaps you have used a different tool in the past?