www.makemkv.com

Try deactivating USB selective power saving in your energy options.

Also try carefully washing the discs as you say they're brand new.

You can also test it with the firmware BU40N 1.03MK.

Yes, try it.

Let first your operation system initialize. Will the disc shown in the explorer?

Which disc format cause this error? Only 4K BD, or normal BD and DVD also?

asmcom wrote: ↑

Thu Apr 17, 2025 11:40 am

Hello Everyone,

Asmcom has ongoing serious health issues, we apologise for not having the website open again as he is in hospital with pneumonia. Will update in due course.

Kind Regards

Tracey

Oh, that doesn't sound good. I wish him to get well soon.

Yes, thanks for the addition!

You're welcome. Good luck for your search. Ah, I've forgot another slim drive with the BU40N in it. You can also look out for the Buffalo BRXL-PT6U2V(B). But have a good look before buying. I'd only two of them, both with the BU40N. I've not enough expierience with it to say, every of them has the B...

The internal drives has different quality, there are better and worse drives, but with the BU40N I've personally the best expierience with difficult discs (in relation to LG-based drives). Also the recommended firmware is important. With the BU40N 1.00 for example the ripping of horrible 4K disc Bla...

If you want a LG and maximum ripping speed is not very important for you take a LG BU40N or a BU50N. It's a slim drive. You can find it without enclosure or built in the new Verbatim 43888 or in the LG BP55EB40. Also Techpulse, Nolyth or Orico has externel slim drives which could has a BU40N inside ...

How does the mistake you receive express itself? Is an error message from MakeMKV available?

Post your MakeMKV drive information.

Don't exists.

You need a directly support from Billycar11 or CooperVid.

Post your MakeMKV drive information, ask gently for support and wait for a reaction.

No, sorry. The firmware is newer then November 2022. All Pioneer drives which could be 4k friendly with the right firmware but were flashed to a firmware 12/22 or newer are out of the game.

No, the firmware is younger than November 2022. No downgrade possible like all possible drives with firmware like that. Sorry.

Check this for further information ---> viewtopic.php?f=19&t=30383

......... ......... For example, a tabular list of manufacturers and the latest working firmware would not be bad. And a clear statement of what works and what doesn't. After all, Makemkv is not cheap and then it should also work with the drive that is installed. :shock: MakeMKV can process what a ...

New discs you should wash with a warm soapy water gently and dry it in the same way with a soft microfiber cloth.
There could be an invisible film on the discs which can disrupt LG-based drives (sometimes in relation to 2- or 3-layer discs). Pioneers usually has no problems with this.