Here’s MakeMKV’s info pane:
And here’s the log:
BEFORE:
Drive Information
OS device name: /dev/rdisk6
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP50NB40
Revision: 1.03
Serial number: [redacted]
Firmware date: 2120-05-07 09:17
Bus encryption flags: 17
Highest AACS version: 68
LibreDrive Information
Status: Possible (with patched firmware)
Drive platform: MT1959
Harware support: Yes
Firmware support: No
Firmware type: Original (patched version available)
Firmware version: 1.03
DVD all regions: Possible (with patched firmware)
BD raw data read: Possible (with patched firmware)
BD raw metadata read: Possible (with patched firmware)
Unrestricted read speed: Possible (with patched firmware)
AFTER:
Drive Information
OS device name: /dev/rdisk4
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE BP50NB40
Revision: 1.03
Serial number: SIM2121145053
Firmware date: 2120-05-07 09:17
Bus encryption flags: 17
Highest AACS version: 68
LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.03
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes
Disc Information
Label: [redacted]
Timestamp: 2020-11-10 17:24:21
Protection: AACS v68
Data capacity: 25.95 Gb
Disc type: BD-ROM
Number of layers: 2
Channel bit length: 74,5 nm (25.0 GB max. per layer)
And for clarification, the drive is a BP50NB40-NB50 which was flashed with that version of the patched firmware.Debug log started at Sat Jul 4 19:21:36 2026 , written by MakeMKV v1.18.4 darwin(arm64-release)
001005:0000 MakeMKV v1.18.4 darwin(arm64-release) started
001004:0000 Debug logging enabled, log will be saved as file:///Users/nicholasferguson/MakeMKV_log.txt
Using 262272KB for read cache.
Network access is ENABLED, CURL version 8.7.1/(SecureTransport) LibreSSL/3.3.6/1.69.0 (x86_64-apple-darwin26.0) , proxy server not set.
002010:0000 Optical drive "BD-RE HL-DT-ST BD-RE BP50NB40 1.03 SIM2121145053d" opened in OS access mode.
SDF v0a6: HL-DT-ST_BD-RE_BP50NB40_1.03_212005070917_SIM2121145053
SDF v0a6: HL-DT-ST_BD-RE_BP50NB40_1.03_212005070917_SIM2121145053
SDF v0a6: HL-DT-ST_BD-RE_BP50NB40_1.03_212005070917_SIM2121145053
Any help is appreciated; thank you.