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Posted: **Wed Jul 01, 2026 7:18 am**

MakeMKV can't read the Mandalorian disk 1 and quits with this error:

The volume key is unknown for this disc - video can't be decrypted

I already updated my keydb

~/.config/aacs/keydb.cfg

... and for good measure ...

Code: Select all

~/.config/aasc/KEYDB.cfg

Doesn't work though. I'm not even sure, MakeMKV actually uses those files.

What can I do to solve this?

Posted: **Wed Jul 01, 2026 7:52 am**

If it's the 4K version, you need a UHD-compatible drive and LibreDrive : viewtopic.php?t=18856 and viewtopic.php?t=19634

With UHD discs (EDIT : and even some unsupported regular Blu-ray discs when you don't have LibreDrive, as tomty89 pointed out below), when the disc is not yet supported you may also need to send a dump file to svq@makemkv.com and/or post in the following thread, following the instructions : viewtopic.php?t=38293

If you have a Windows machine/virtual machine, this tool can also help with UHDs : viewtopic.php?p=166510#p166510

If it's a regular Blu-ray, having LibreDrive is still recommended, although usually not necessary. First, "keydb.cfg" should be renamed to "KEYDB.cfg", as Linux is case-sensitive. Secondly, it should also be placed inside ~/.MakeMKV/

If it's a regular Blu-ray and it's still not working after placing KEYDB.cfg inside ~/.MakeMKV/, unless you have a Windows machine that you can use FindVUK (https://forum.doom9.org/showthread.php?t=172472) and DVDFab with, your best bet is LibreDrive.

You may also wish to post your MakeMKV drive information so we can provide further assistance. It should look like this, roughly :

Drive Information
OS device name: /dev/sr0
Manufacturer: HL-DT-ST
Product: BD-RE BU40N
Revision: 1.00
Serial number: [redacted]
Firmware date: 2116-12-20 15:28
Bus encryption flags: 17
Highest AACS version: 82

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Original (unpatched)
Firmware version: 1.00
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

No disc inserted

If you can copy & paste the information while the Mandalorian disc is inserted, that would be even better.

Posted: **Wed Jul 01, 2026 7:54 am**

See viewtopic.php?t=38293. Make sure that your read the first post and follow the template btw.

But before you do, maybe you should run bd_info on the disc and report back (to this thread) with the output first. I can see a few "Mandalorian disk 1" entries (for season 1 to 3) in the current KeyDB. (EDIT: I'm assuming you also have libaacs installed.)

I'm not even sure, MakeMKV actually uses those files.

I think you need to copy it into ~/.MakeMKV, but I don't remember for sure and can't test at the moment. (Should probably be named as KEYDB.cfg.)

Posted: **Wed Jul 01, 2026 4:24 pm**

Well, my drive might not support it. It's indeed 4k

Code: Select all

Drive Information
OS device name: /dev/sr0
Current profile: BD-ROM
Manufacturer: HL-DT-ST
Product: BD-RE WH16NS60
Revision: 1.02
Serial number: [...]
Firmware date: 2118-10-29 19:36
Bus encryption flags: 17
Highest AACS version: 82

LibreDrive Information
Status: Enabled
Drive platform: MT1959
Firmware type: Patched (microcode access re-enabled)
Firmware version: 1.02
DVD all regions: Yes
BD raw data read: Yes
BD raw metadata read: Yes
Unrestricted read speed: Yes

Disc Information
Label: THE_MANDALORIAN_S1_D1
Timestamp: 2023-11-17 14:14:05
Protection: AACS2.0/C v77
Data capacity: 82.21 Gb
Disc type: BD-ROM UHD
Number of layers: 3
Bus encryption flags: 80

Posted: **Wed Jul 01, 2026 7:06 pm**

So you do have a UHD capable drive as well as the correct firmware. It's definitely worth doing this :

Download the latest version of KEYDB.cfg (https://fvonline-db.bplaced.net/), then :

First, "keydb.cfg" should be renamed to "KEYDB.cfg", as Linux is case-sensitive. Secondly, it should also be placed inside ~/.MakeMKV/

Try opening the disc with MakeMKV again after doing that. If it still doesn't work, please open the ~/.MakeMKV/ folder and e-mail the tgz dump file to svq@makemkv.com

See also :

preserve wrote:Once submitted, the turnaround can be pretty fast, between 12 to 48 hours. However, it can also sometimes take several days or longer.
When you submit a dump, ensure that:
- You are using the latest version of MakeMKV.
- You are using a LibreDrive-enabled drive (be it "friendly" or "official", but it must be LibreDrive enabled).
- You have "Enable Internet access" enabled in Preferences (in the General tab), so that MakeMKV will check for updated keys when you try to open the disc again.
- You are opening the original disc (not a backup, not ISO).
- You are opening the disc using a real disc drive natively (no elby clonedrive, no vmware, no dvdfab or discsoft virtual, etc).

Also, you may wish to follow the instructions in the following thread so that you can get the needed Volume Unique Key faster : viewtopic.php?t=38293

EDIT :

xesegik wrote:Well, my drive might not support it.

To clarify, your drive does support it. It's MakeMKV that's currently missing the correct VUK, so you have to help people gain access to it if you want the disc to be supported. We literally cannot do this for you unless we also happen to have the same disc with the same VUK.

Posted: **Wed Jul 01, 2026 7:45 pm**

Sayaka wrote: Wed Jul 01, 2026 7:06 pm It's MakeMKV that's currently missing the correct VUK

Could also be just HK downlaoding failed due to geoblocking. (Should have been hinted in the log if that's the case.)

Posted: **Wed Jul 01, 2026 8:47 pm**

Very true, thank you for mentioning that.

(I just thought that wouldn't be the case, since xesegik probably would have told us about it given that they posted an error message in the first post of this thread. But it certainly doesn't hurt to mention this, especially since other people might stumble upon this topic.)

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The volume key is unknown for this disc - video can't be decrypted

The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted

Re: The volume key is unknown for this disc - video can't be decrypted