@Christopher:
- your EFI entries have been added by Boot-Repair, you can rename them by modifying your /etc/grub.d/25_custom file. This is not related to the bug we are talking about here.
- the fact that you have some "bad entries like /dev/sdXY" (that come back because automatically generated by update-grub) is exactly the bug we are talking about.
@Christopher: d/25_custom file. This is not related to the bug we are talking about here.
- your EFI entries have been added by Boot-Repair, you can rename them by modifying your /etc/grub.
- the fact that you have some "bad entries like /dev/sdXY" (that come back because automatically generated by update-grub) is exactly the bug we are talking about.