'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

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montoblan
Posts: 3
Joined: Fri Feb 16, 2018 10:43 pm

'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by montoblan » Fri Feb 16, 2018 11:03 pm

Hi all.

I have half a dozen UHD discs that have all ripped fine, and one that refuses to even open, with the the log output below. To clarify, this isn't during the ripping process, this is the initial attempt to open the disc.

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MakeMKV v1.12.0 win(x64-release) started
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '524288'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '1048576'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '32768'
Again, I've ripped several other discs without issues, it's just this one giving me trouble. Also, it's not this particular copy of the disc, either: I thought the disc might be defective, so I returned it for another, and the second has the same behavior. I'm pretty sure there's no damage to the disc - I literally took it directly from the newly-opened package and put it in the drive. The surface looks pristine to my eyes, too. I've tried cleaning it anyway, with no luck. Interestingly, the offsets are always exactly the same, on every attempt, and with both copies of the disc.

My drive is an ASUS BW-16D1HT on FW 3.00:

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Drive Information
OS device name: \Device\CdRom0
Current profile: BD-ROM
Manufacturer: ASUS
Product: BW-16D1HT
Revision: 3.00
Serial number: ************
Firmware date: 2115-11-03 11:10: 
Bus encryption flags: 1F
Highest AACS version: 63
Disc info comes up as:

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Disc Information
Data capacity: 85.61 Gb
Disc type: BD-ROM UHD
Number of layers: 3
Not a lot to go on there.

Anyone have any ideas what may be going on here? (And any suggestions to fix it?)

tvguy7
Posts: 10
Joined: Thu Feb 01, 2018 2:59 am

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by tvguy7 » Sat Feb 17, 2018 12:08 am

That looks like a decryption error. What movie is this? Is it listed in the hashed keys file? Even if it is, it could need a different key.
It looks like the drive can't read the disc. I have the same disc drive and have received some errors related to being able to read the disc. One disc had a small scratch at the edge of the disc and I received the below error. I was able to get a new version of the disc and it was fine.

Error 'Scsi error - HARDWARE ERROR:TIMEOUT ON LOGICAL UNIT' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '524288'

rivey
Posts: 129
Joined: Fri Dec 29, 2017 3:49 pm
Location: Los Angeles

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by rivey » Sat Feb 17, 2018 5:06 am

tvguy7 wrote:That looks like a decryption error. What movie is this? Is it listed in the hashed keys file? Even if it is, it could need a different key.
It looks like the drive can't read the disc. I have the same disc drive and have received some errors related to being able to read the disc. One disc had a small scratch at the edge of the disc and I received the below error. I was able to get a new version of the disc and it was fine.

Error 'Scsi error - HARDWARE ERROR:TIMEOUT ON LOGICAL UNIT' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '524288'
The first thing that I do now on older and new discs is to clean them with a 50/50 solution of water and rubbing alcohol in a small pump bottle and a micro fiber cloth. Gets them clean and can solve some problems. You would be surprised what is on a brand new disc. That is the first thing that I would do. Good luck and let us know what is happening.

montoblan
Posts: 3
Joined: Fri Feb 16, 2018 10:43 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by montoblan » Sun Feb 18, 2018 5:06 am

tvguy7 wrote:That looks like a decryption error.
Maybe? Looks to me like it's before it even gets to the point of trying to decrypt it, though I can't say that for sure. It doesn't make a dump file, FWIW.
tvguy7 wrote:What movie is this?
Crouching Tiger, Hidden Dragon.
tvguy7 wrote:Is it listed in the hashed keys file? Even if it is, it could need a different key.
The movie is, with two keys, but I have no idea whether this disc is one of those keys. It doesn't get far enough to make a dump file.
tvguy7 wrote:It looks like the drive can't read the disc. I have the same disc drive and have received some errors related to being able to read the disc. One disc had a small scratch at the edge of the disc and I received the below error. I was able to get a new version of the disc and it was fine.

Error 'Scsi error - HARDWARE ERROR:TIMEOUT ON LOGICAL UNIT' occurred while reading 'BD-RE ASUS BW-16D1HT 3.00' at offset '524288'
Well, as far as I can see the disc is completely clean and undamaged, though it's possible I'm missing something. I've tried cleaning it anyway, same thing. And this is already my second copy of the disc, and both copies have done the same thing, even down to the exact same offset numbers.

Though, talking about the drive being unable to read it - that does kinda make me wonder if it'd be worth trying to get a different friendly drive to try to read it and compare what happens there... Not an inexpensive experiment, though...

Woodstock
Posts: 7638
Joined: Sun Jul 24, 2011 11:21 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by Woodstock » Sun Feb 18, 2018 5:46 pm

Hardware time-outs do not have to do with decryption. Something has caused the drive to become unresponsive, usually related to the disk itself, but sometimes related to hardware (USB drives can run out of power when they go fast, but that error usually is different).

From my experience, the drive has decided to keep trying to read a sector that it couldn't read, and so it ignores calls from the operating system to report its status.... which then time out.
How to aid in finding the answer to your problem: https://www.makemkv.com/faq/item/8

montoblan
Posts: 3
Joined: Fri Feb 16, 2018 10:43 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by montoblan » Sun Feb 18, 2018 7:50 pm

Woodstock wrote:Hardware time-outs do not have to do with decryption. Something has caused the drive to become unresponsive, usually related to the disk itself, but sometimes related to hardware (USB drives can run out of power when they go fast, but that error usually is different).

From my experience, the drive has decided to keep trying to read a sector that it couldn't read, and so it ignores calls from the operating system to report its status.... which then time out.
I don't *think* it's the disc in this case, unless it's some manufacturing defect that would affect multiple copies of the disc in the same way (but that's certainly possible.)

Not USB in this case but SATA, so dunno if there's anything there.

Saw the FAQ link in your sig, turned on debug logging and sent it to the support email, hopefully there's some helpful info there. (Looked like the exact same log output I've been seeing, plus error codes at what I'm assuming are obfuscated source locations, so I dunno if there's any point to post that debug log here as well.)

B17NNS
Posts: 30
Joined: Tue Apr 03, 2018 6:43 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by B17NNS » Sat May 26, 2018 12:27 pm

Having the exact same issue with the exact same movie.

Brand new disc fresh out of the cellophane, surface of the disc not touched once.

SamuriHL
Posts: 1708
Joined: Mon Jun 14, 2010 5:32 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by SamuriHL » Sat May 26, 2018 3:20 pm

Pretty much every single UHD I've bought had to be cleaned right out of the box. Failing to do so brings up many errors. After cleaning, all of them have been read fine. I don't know what they're putting on these discs these days but it's almost like an oily film that builds up inside the package. They are very sensitive.

keithl
Posts: 21
Joined: Tue Oct 18, 2016 8:14 pm

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by keithl » Thu Oct 15, 2020 11:08 pm

What is best way to clean a disc? Mine is a rental UHD disc it looks goo I have wiped it down, but same issues, in same spot early on about 300MB in.

TC3263827
Posts: 1
Joined: Sat Oct 24, 2020 5:31 am

Re: 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR'?

Post by TC3263827 » Sat Oct 24, 2020 5:35 am

I created an account on the forum just to say THANK YOU for the cleaning tip. I have a copy of The Fifth Element 4k UHD from the UK that wouldn't read in either of my drives that haven't had any problems before. The disc was brand new and clean but failed to load in either drive. I tried the 50/50 alcohol + water trick and it worked! I'll definitely remember that tip!

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