Struggling to open UHD discs on BU40N

[joehockings]

Hi, I'm after some help as I'm new to this and would like to start ripping my 4k UHD disc collection to use for plex.

I've been using the guide (Ultimate UHD Drives Flashing Guide Updated 2025) as well as a couple of YouTube videos but I have yet to be successful with fully opening a 4k Blu Ray. For context, I've ripped DVDs and standard Blu-Rays just fine.

I've attached an image of what my version of MakeMKV looks like as well as the file I used to flash it in case there are any glaringly obvious errors! I have tried opening The Martian 4k, The Dark Knight 4k, Turning Red 4k, Black Panther 4k, Avengers Infinity War 4k and now as another test Harry Potter and the Philosopher's Stone 4k (of which I have included the dump file for reference)

Whenever I do try to open a UHD disc, some common errors I have had are:

'Error 'Scsi error - NOT READY:LOGICAL UNIT IS IN PROCESS OF BECOMING READY' occurred while reading 'BD-RE HL-DT-ST BD-RE BU40N 1.03 MO2P6A84502' at offset '655360''

'Can't read AACS Vid from disc - most likely current AACS host certificate is revoked by your drive'

'Error 'Scsi error - ILLEGAL REQUEST:COPY PROTECTION KEY EXCHANGE FAILURE - KEY NOT PRESENT'

'Error 'Scsi error - NOT READY:LOGICAL UNIT IS IN PROCESS OF BECOMING READY' occurred while reading 'BD-RE HL-DT-ST BD-RE BU40N 1.03 MO2P6A84502' at offset '1082968064'

So far I have tried: re-flashing the optical drive, restarting the drive/pc, unplugging other items using same USB area on motherboard (to try help with power issues maybe?) and making use of the KeyDB helper as well and I've so far come up empty on all fronts. Any help or advice would be greatly appreciated as I'm pulling my hair out with this one!

PS. I am from the UK and have UK 4k discs, if that makes any difference!

[MrPenguin]

Hi, I'm after some help as I'm new to this and would like to start ripping my 4k UHD disc collection to use for plex.

Firstly, MakeMKV should almost certainly know how to decrypt this disk already. The reason you are struggling is probably because your drive cannot enable LibreDrive, and so bus encryption is still enabled.

Has MakeMKV been able to connect to the Internet to download both the LibreDrive microcode and the hashed keys database?

There should be a file called _private_data.tar in the same directory where your TGZ dump file was created. (This is MakeMKV's "data directory", i.e. C:\Users\johoe\MakeMKV in your case.) Check whether this _private_data.tar contains a file like:

Code: Select all

sdf_000000a3.bin

If it doesn't then you can download it manually from http://www.makemkv.com/svq/sdf.bin. Copy this file into MakeMKV's data directory and restart MakeMKV.

As an aside, the AACS/MKB_RO.inf file inside your TGZ dump file has been truncated to only 56 bytes, which makes it useless to anyone trying to add your disk to the public KEYDB database. Could you compress the AACS/MKB_RO.inf file from your physical UHD disk, upload it into (say) Google Drive or OneDrive, and then reply here with a public download link please?

[joehockings]

Hi! Thank you so much for your reply, I've done some troubleshooting and MakeMKV has definitely been able to connect to the internet as far as I can tell, it is enabled under preferences and the sdf_000000a3.bin file is in the _private_data.tar folder as well. However, I am still getting the same errors and am unabel to open a 4k disc.

On that note, I did have a question as to if that folder should remain compressed or if it should be extracted if this makes any difference at all?

Is there a way that I can check specifically if the internet connection is being made or not? Are there any error codes that will be present if there is no connection?

Re. the AACS/MKB_RO.inf file inside the TGZ dump file, I have tried extracting the file to upload and share it but it is still coming out as 56 bytes unfortunately.

[berna]

I am having the same problem! Exactly the same issue and the same situation as joehockings!

[joehockings]

As an update, the UHD discs get recognised by MakeMKV, when opening they seem to get stuck specifically on:

/AACS/ContentHash001.tbl
/AACS/ContentHash002.tbl

It gets stuck and usually times out or crashes MakeMKV totally. Does this indidcate any particular issue?

[MrPenguin]

It gets stuck and usually times out or crashes MakeMKV totally. Does this indidcate any particular issue?

You need to post MakeMKV's log output. As a rule, if your UHD drive can enable LibreDrive and your _private_data.tar file contains the LibreDrive microcode, then it should work. There are also occasional glitches where LibreDrive still doesn't initialize, but these are usually resolved by power-cycling the drive.

Re. the AACS/MKB_RO.inf file inside the TGZ dump file, I have tried extracting the file to upload and share it but it is still coming out as 56 bytes unfortunately.

MakeMKV has only added a 56 byte MKB_RO.inf file into that TGZ dump file, presumably because it's no longer interested in people emailing the full file to svq@makemkv.com. To be fair, I understand now that the Powers That KEYDB already have a copy of this file as well, so there's no need for you to upload it. They'd still be interested in receiving a discatt.dat file for this disk though, assuming your drive has now enabled LibreDrive.

[joehockings]

It gets stuck and usually times out or crashes MakeMKV totally. Does this indidcate any particular issue?

You need to post MakeMKV's log output. As a rule, if your UHD drive can enable LibreDrive and your _private_data.tar file contains the LibreDrive microcode, then it should work. There are also occasional glitches where LibreDrive still doesn't initialize, but these are usually resolved by power-cycling the drive.

Re. the AACS/MKB_RO.inf file inside the TGZ dump file, I have tried extracting the file to upload and share it but it is still coming out as 56 bytes unfortunately.

MakeMKV has only added a 56 byte MKB_RO.inf file into that TGZ dump file, presumably because it's no longer interested in people emailing the full file to svq@makemkv.com. To be fair, I understand now that the Powers That KEYDB already have a copy of this file as well, so there's no need for you to upload it. They'd still be interested in receiving a discatt.dat file for this disk though, assuming your drive has now enabled LibreDrive.

Hi again, I've tried all sorts of things in order to try and get a 4k uhd disc open using this drive (I've ruled out the internet not being enabled as well as the microcode as well) and at this point I'm feeling a little bit deflated but have a feeling the issue must be with the drive itself.

I've ordered a pre-flashed drive and will compare the 2 once it arrives and will update this post if I can confirm this is the issue. Again, thanks for your help!

PS. I have attached the log output from my most recent attempt, using a brand new 4k disc of 'Turning Red', just in case.

[MrPenguin]

PS. I have attached the log output from my most recent attempt, using a brand new 4k disc of 'Turning Red', just in case.

Code: Select all

002003:0000 Error 'Scsi error - NOT READY:LOGICAL UNIT IS IN PROCESS OF BECOMING READY' occurred while reading '/AACS/MKB_RO.inf' at offset '0'

This looks like you needed to wait until your disk appeared in Windows File Explorer before launching MakeMKV.

[paidlowered]

I know it's enabled by default but make sure that MakeMKV is able to access the internet. It is in preferences somewhere. I'm ripping a disc so I can't see right now

[paidlowered]

Oh and also your MK firmware is one version behind if I'm not wrong
MK firmware pack

[joehockings]

Hi all, just as an update as I have now received the new pre-flashed drive. MakeMKV was not the issue or the discs it was indeed the Verbatim 43888 drive! I think it must have been bricked previously as it was bought as used -like new on Amazon. Thanks for the help! I've got lots of movies to rip...

[MrPenguin]

Hi all, just as an update as I have now received the new pre-flashed drive. MakeMKV was not the issue or the discs it was indeed the Verbatim 43888 drive! I think it must have been bricked previously as it was bought as used -like new on Amazon. Thanks for the help! I've got lots of movies to rip...

Now you have a working UHD drive, can you help add your disks into KEYDB please? E.g. your "Harry Potter and the Philosopher's Stone" disk is still missing some information .

[mocha1970]

Hey all... this is my first time around in attempting to rip 4K Blu-ray's and I have purchased a verbatim 43888 for my 2024 MacBook Pro with macOS 26. I've done my best to follow all the instructions and will always essentially where I've landed and seems like it has stalled out. Any hints or chips that can be offered would be greatly appreciated.

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