www.makemkv.com

This has already been discussed in multiple posts. For example, see here:

http://www.makemkv.com/forum2/viewtopic ... S60#p60792

Specifically at the post from "mike admin" who is the owner/developer of MakeMKV. That drive with its stock firmware is currently NOT supported for UHD ripping ...

Hi I just got BU40N, but it won`t read any uhd disc.

Drive Information
OS device name: F:
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: CB05
Serial number: N705HS019592
Firmware date: 2117-11-29 13:51:
Bus encryption flags: 1F

No disc inserted

Any help would be greatly appreciated.
thank ...