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All, I was able to rip (full backup) the Last Jedi Blu Ray movie (non UHD) with seemingly no errors. I then attempted to use Handbrake to make an MKV and only the 2 CH stereo track comes up on the audio listing. I have never had this happen before. Any suggestions? The movie states English 7.1 DTS ...

Good news for you!

Unfortunately for me, I am still at a loss after countless hours trying to get the SG driver to work. It still doesn't recognize the optical drive as SG*.

Am very pleased to confirm that with the help (and patience) of users above and able to understand that this is intentional behaviour, I have run the commands noted and that MakeMKV now works, and that the edit to the module configuration file has made it a permanent fix.

So - happy now. No need ...

When you don't have any /dev/sg* device files, it means that the sg scsi driver is not loaded.

I don't know why some distributions (or udev?) load this driver by default and some don't, but you can load it manually using:
sudo modprobe sg

This is what I get when I run sudo modprobe sg:

root ...

Here is ls -la /dev/s*

root@ubuntu_1604:~# ls -la /dev/s*
lrwxrwxrwx 1 root root 15 一 19 23:05 /dev/stderr -> /proc/self/fd/2
lrwxrwxrwx 1 root root 15 一 19 23:05 /dev/stdin -> /proc/self/fd/0
lrwxrwxrwx 1 root root 15 一 19 23:05 /dev/stdout -> /proc/self/fd/1

/dev/shm:
total 328
drwxrwxrwt 2 ...

Appreciate the help. Unfortunately, it states there is no such file or directory. I did an ls -la /dev:

root@ubuntu_1604:~# ls -la /dev
total 4
drwxr-xr-x 11 root root 2160 一 19 23:05 .
drwxrwxr-x 27 admin administrator 4096 一 19 23:05 ..
drwxr-xr-x 2 root root 1920 一 19 23:05 char
lrwxrwxrwx 1 ...

root@ubuntu_1604:~# ls -la /sys/bus/scsi/devices/
total 0
drwxr-xr-x 2 root root 0 一 21 21:02 .
drwxr-xr-x 4 root root 0 一 21 17:37 ..
lrwxrwxrwx 1 root root 0 一 21 17:37 10:0:0:0 -> ../../../devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.0/host10/target10:0:0/10:0:0:0
lrwxrwxrwx 1 root root 0 一 21 ...

I am trying to use MakeMKV to rip blu ray directly to my Qnap TS-451+ using LinuxStation - Ubuntu 16.04. I have been able to get the Qnap to recognize the drive and when using Linuxstation, it shows that it is a block device in /dev/sr0, mounts at /.share/external/dev3304_-1. VLC, MakeMKV (both v 1 ...