www.makemkv.com

MakeMKV v1.12.2 darwin(x64-release) started
Debug logging enabled, log will be saved as /Users/phillipsiebels/MakeMKV_log.txt
DEBUG: Code 0 at M5rD/a(B!2Rn,3:29395632
DEBUG: Code 0 at M5rD/a(B!2Rn,3:29395632
DEBUG: Code 117637423 at iXWujWp2E]d>xMLE:213131594
DEBUG: Code 0 at iXWujWp2E]d>xMLE:29394988
DEBUG: Code 0 at 3ZG4H_Th(G=|p[H:213131433
The program can't find any usable optical drives.


I have an externally connected BlueRay/DVD Drive:BD-CMB UJ-120 - The OS recognizes a disc is installed
MacOS 10.13.5
iMac Late 2015 3.3 GHz i5

Main-imac:~ fyl2112$ ioreg -p IOUSB
+-o Root <class IORegistryEntry, id 0x100000100, retain 15>
+-o AppleUSBXHCI Root Hub Simulation@14000000 <class AppleUSBRootHubDevice, $
+-o Keyboard Hub@14100000 <class AppleUSBDevice, id 0x10000031d, registere$
| +-o Apple Keyboard@14120000 <class AppleUSBDevice, id 0x1000003a3, regis$
+-o USB2.0 Hub @14600000 <class AppleUSBDevice, id 0x100000321$
| +-o USB2.0 Hub @14610000 <class AppleUSBDevice, id 0x1000003$
| | +-o BD-CMB UJ-120 @14613000 <class AppleUSBDevice, id 0x1000003dc, r$ [Blue Ray Player]
| +-o Bose USB Audio@14630000 <class AppleUSBDevice, id 0x1000003bc, regis$
+-o FaceTime HD Camera (Built-in)@14400000 <class AppleUSBDevice, id 0x100$
+-o USB3.0 Hub @14800000 <class AppleUSBDevice, id 0x100000347$
| +-o USB3.0 Hub @14810000 <class AppleUSBDevice, id 0x1000003$
+-o Backup+ Desk@14900000 <class AppleUSBDevice, id 0x10000037a, register$
+-o Bluetooth USB Host Controller@14500000 <class AppleUSBDevice, id 0x100$


/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: RUSH CLOCKWORK ANGELS *48.7 GB disk4


BD-CMB UJ-120 :

Product ID: 0x1040
Vendor ID: 0x13fd (Initio Corporation)
Version: 1.06
Serial Number: 0000000000000000W
Speed: Up to 480 Mb/sec
Manufacturer: Initio
Location ID: 0x14613000 / 10
Current Available (mA): 500
Current Required (mA): 2
Extra Operating Current (mA): 0
Media:
BD-CMB UJ-120:
Capacity: 48.69 GB (48,689,905,664 bytes)
Removable Media: Yes
BSD Name: disk4
Logical Unit: 0
Media Name: RUSH CLOCKWORK ANGELS
Partition Map Type: Unknown
USB Interface: 0

I have tried moving to the USB ports on the back of the iMac instead of the USB hub where it was previously connected.

Console Error/Fault
Subsystem: com.apple.appleevents

AEGetDescData of non-desc type 'reco' not a good idea

default 19:15:41.147024 -0700 launchservicesd CHECKIN:0x0-0x68068 1270 com.makemkv.MakeMKV
default 19:15:41.495046 -0700 makemkvcon TCP Conn [1:0x100b22050] using empty proxy configuration
default 19:15:41.495046 -0700 makemkvcon TCP Conn [2:0x100a08d10] using empty proxy configuration
default 19:15:41.495066 -0700 makemkvcon Stream client bypassing proxies on TCP Conn [1:0x100b22050]
default 19:15:41.495068 -0700 makemkvcon Stream client bypassing proxies on TCP Conn [2:0x100a08d10]
default 19:15:41.495083 -0700 makemkvcon TCP Conn 0x100b22050 started
default 19:15:41.495085 -0700 makemkvcon TCP Conn 0x100a08d10 started
default 19:15:41.495571 -0700 makemkvcon [1 <private> <private>] start
default 19:15:41.496418 -0700 makemkvcon [2 <private> <private>] start
default 19:15:41.549192 -0700 makemkvcon TCP Conn 0x100b22050 event 1. err: 0
default 19:15:41.549258 -0700 makemkvcon TCP Conn 0x100b22050 complete. fd: 20, err: 0
default 19:15:41.554624 -0700 makemkvcon TCP Conn 0x100a08d10 event 1. err: 0
default 19:15:41.554664 -0700 makemkvcon TCP Conn 0x100a08d10 complete. fd: 23, err: 0
error 19:15:41.843612 -0700 makemkv AEGetDescData of non-desc type 'reco' not a good idea
default 19:15:42.235835 -0700 makemkvcon TCP Conn 0x100b22050 canceled
default 19:15:42.235935 -0700 makemkvcon TCP Conn 0x100a08d10 canceled
default 19:15:42.235958 -0700 makemkvcon [2 <private> stream, pid: 1271] cancelled
[2.1 36D0C65C-36BF-48A3-B16B-0D18F02BE503 <private>.51740<-><private>]
Connected Path: satisfied (Path is satisfied), interface: en1, ipv4, dns
Duration: 0.739s, DNS @0.000s took 0.035s, TCP @0.037s took 0.016s
bytes in/out: 1044/127, packets in/out: 4/1, rtt: 0.015s, retransmitted packets: 0, out-of-order packets: 0
default 19:15:42.236288 -0700 makemkvcon [1 <private> stream, pid: 1271] cancelled
[1.1 0E9A4FA2-0897-4D72-9A21-CE8D821D5C23 <private>.51739<-><private>]
Connected Path: satisfied (Path is satisfied), interface: en1, ipv4, dns
Duration: 0.740s, DNS @0.000s took 0.036s, TCP @0.037s took 0.022s
bytes in/out: 1422/127, packets in/out: 4/1, rtt: 0.019s, retransmitted packets: 0, out-of-order packets: 0
default 19:15:51.204326 -0700 makemkv LSExceptions shared instance invalidated for timeout.

Hi fyl2112. You can try checking if your external optical drive is working fine. Sometime ago I had a similar problem where MakeMKV could not detect any optical drive. Found out my external optical drive is faulty. Try using a different optical drive if you can borrow one. Another way to cross check is to go to “About This Mac”, click on “More Info” button and click “System Report” button, under “Disc Burning” and check if the profile of your optical drive appears. Also try using a different USB cable.