Hi Laurent, thanks for reporting this problem. Leftover files in /etc/kernel/*.d are bad… I made a bit of research and found out the following, all of which happened during the jessie release cycle:
0. The syslinux installer is part of the syslinux binary package 1. Version 3:6.03~pre1+dfsg-2: The installer was moved from the extlinux binary package to a newly introduced syslinux-stuff binary package 2. Version 3:6.03~pre19+dfsg-1: The syslinux-stuff binary package was dropped (completely removing the extlinux installer from Debian) So, as far as I can tell, every system that has syslinux since pre-jessie (and was never reinstalled since) will have those leftover files. Fixing this now in unstable feels somewhat in vain… I will ask for advise on how to best deal with this issue. For now I wanted to document my findings. Regards Lukas