I have an LG WH16NS40. I used the patch from this post:
viewtopic.php?f=19&t=20054
LibreDrive appears to be enabled from this image:

However, no matter how many times I try with different Blu-rays, MakeMKV always says "No disc inserted." I admittedly have no idea what I'm doing other than a loose understanding of what LibreDrive is and the process for enabling it with MakeMKV. I would greatly appreciate the community's support in getting my drive working with LibreDrive and MakeMKV. Thank you!
Here's a photo of my Blu-Ray drive:
