Hi, Dominique Dumont wrote: > I guess that growisofs got better.
It depends on the starting point of the comparison. {:) https://tracker.debian.org/media/packages/d/dvd%2Brw-tools/changelog-7.1-11 shows two program changes in the last 5 years. None would be related to speed or physical quality of drive and media. The youngest patch of 2015 is by me. The other one from 2011 does not change growisofs behavior with empty BD-R, but only with those which already contain some data. If speed reduction reproducibly helps, then there is a bad relation between drive and medium, not a wrongdoing in the burn software. As for growisofs getting better, one should strive for applying at least the first patch in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=794868 which is tested by Fedora since 4 years. Have a nice day :) Thomas