“MakeMKV Scsi error - MEDIUM ERROR" for Pirates of the Caribbean 2: I get the following error, when trying to copy "Pirates of the Caribbean 2" after aboput 20 minutes.
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00001.m2ts' at offset '2994632704'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00001.m2ts' at offset '2994958336'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00001.m2ts' at offset '2994958336'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00001.m2ts' at offset '2995290112'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00001.m2ts' at offset '2995290112'

I tried it several times, the offsets are changing. The discs looks fine (no scratches or dust) and plays fine as well. And copying other discs with the same drives works fine too... Any idea what might be wrong?”

MakeMKV is a wonderful tool when you want to rip and convert DVD discs or even Blu-ray discs to video files with high quality. You could convert Blu-ray/DVD to MKV files with MakeMKV in simple clicks, even the source Blu-ray/DVD discs are copy protected. It’s been popular for its satisfactory performance and effectiveness. However, still many MakeMKV users have reported various errors during using MakeMKV. Scsi error is one of the most frequently reported errors. What can you do to fix common MakeMKV Scsi error? Well, if you also come across to such error, this guide would be helpful. Here we would like to show you solutions to solve MakeMKV Scsi errors.

Part 1. Makemkv Scsi Error - Ilegal Request

Once you see MakeMKV Scsi errors such as MakeMKV SCSI error - illegal request, SCSI error - hardware error, Scsi error - medium error on your computer, they are actually disc reading errors. There might be difference reasons. The below are all possible explanations:

  • Dirty disc: Your DVD/Blu-ray discs are dirty. Therefore try to clean carefully and try again.
  • Scratched/damaged/defective disc: Switch to a new DVD/Blu-ray disc for converting.
  • Dirty, damaged or misaligned Blu-ray/DVD drive: In such case, try to connect to another normal drive.

The following SCSI error illegal request in MakeMKV is commonly complained by users.

  • Scsi error - ILLEGAL REQUEST: READ OF SCRAMBLED SECTOR WITHOUT AUTHENTICATION' occurred while reading 'BD-RE TSSTcorp BDDVDW SE-506BB TS00' at offset '1048576'

To solve MakeMKV Scsi erro Illegal Request, you could try the below solutions:

  • Run MakeMKV as the administrator on your computer.
  • Update MakeMKV beta key if you are using its beta, or just re-download and re-install MakeMKV beta on your computer.
  • Set your computer system back to a date before your free beta key expiration.
  • Increase Read retry count in MakeMKV preferences.
  • Update to the latest version of MakeMKV.

By following the above solutions, you might be able to fix the MakeMKV Scsi error - Illegal Request.

Part 2. Makemkv Scsi Error - Medium error

MakeMKV errors could also include Scsi error - Medium error situations. When the Scsi error - Medium Error happens, you might see the error messages listed below:

  • Scsi error - MEDIUM ERROR: L-EC UNCORRECTABLE ERROR' occurred while reading 'BD-RE ASUS BW-16D1HT 3.10' at offset '917504'
  • Scsi error - MEDIUM ERROR: NO SEEK COMPLETE' occurred while reading 'BD-ROM MATSHITA BD-CMB UJ-120 1.01' at offset '65536'

When you come across MakeMKV Scsi error - Medium Error message, try the below fixings:

  • Clean the disc with a soft cloth. Dirty or scratched discs may cause the not reading issue. It's easy to fix a dirty disc. If your discs are damaged, follow our guide on how to fix scratched DVDs.
  • Replace your disc. Disc manufacturing errors can lead to the issue.
  • Try a different drive. A problematic drive can let the disc fail to be read in MakeMKV.

Part 3: MakeMKV Scsi Error - Hardware Error

The third frequently seen MakeMKV SCSI error is MakeMKV Scsi error - Hardware error messages. You could meet the below MakeMKV Scsi error - Hardware Error messages:

  • Posix error - Input/output error occurred while reading

In order to troubleshoot the MakeMKV Scsi error - Hardware error, you could try the below solution:

  • The hardware error MakeMKV displays means the drive doesn't respond with the disc data. Try other discs to check if the error persists. If yes, clean the drive or replace the drive with a new one.

The above solutions might help you fix MakeMKV Scsi errors. If they don’t work, don’t worry. Check the below content. We will show you the final solution to help you fix or avoid MakeMKV Scsi errors.

Part 4: Final Solutions - Leawo Blu-ray Ripper

If you have tried all the above solutions but find no effective result, you might come to the final solution to fix MakeMKV Scsi errors. That’s to make use of Leawo Blu-ray Ripper, the best alternative to MakeMKV, which owns all the features MakeMKV has and even those MakeMKV doesn’t have.

As the best MakeMKV alternative, Leawo Blu-ray Ripper could help you easily decrypt, rip and convert Blu-ray/DVD movies from disc, folder and/or ISO image file to MKV files without any errors such as MakeMKV Scsi errors. Actually, far more than simply converting Blu-ray/DVD movies to MKV files, Leawo Blu-ray Ripper enables you to decrypt, rip and convert Blu-ray to MP4, Blu-ray to AVI, Blu-ray to WMV, etc., and extract audio off Blu-ray/DVD to save in MP3, AAC, FLAC, etc. More than 180 video and audio formats are supported for output. What’s more, it could rip and convert Blu-ray to 4K video, 1080P video, 720P video and regular video according to your personal needs. Plus, you are allowed to freely adjust video and audio parameters of output video files while converting Blu-ray/DVD movies with Leawo Blu-ray Ripper, like video codec, video bit rate, aspect ratio, frame rate, audio codec, audio bit rate, etc.

And Leawo Blu-ray Ripper has stunning trim and crop feature- it trims movie more accurate, crops video more considerate than its competitors, adds image or text watermark, create 3D movies out of 2D Blu-ray/DVD movies, etc.

What really makes Leawo Blu-ray Ripper stand out is its advanced disc decryption ability that could help decrypt Blu-ray discs and get rid of disc region restrictions. Leawo Blu-ray Ripper could help you decrypt, rip and convert Blu-ray discs with AACS, BD+ and the latest MKB protection, and CSS-DVD discs. Currently, quite few Blu-ray converter software tools in the market support this, but most Blu-ray discs are copy protected and region restricted. Leawo Blu-ray Ripper meets this and solves the disc decryption issue easily. In case of this, Leawo Blu-ray Ripper is even better than MakeMKV.

The below guide would show you how to use Leawo Blu-ray Ripper to decrypt, rip and convert Blu-ray movies to video files in detail, just as what you do with MakeMKV, without any MakeMKV Scsi errors happening.

Step 1: Download and install

At first, download and install Leawo Blu-ray Ripper on your computer. (Mac users should download the Leawo Blu-ray Ripper for Mac)

  • Leawo Blu-ray Ripper
  • Leawo Blu-ray Ripper

    ☉ Decrypt and rip Blu-ray/DVD discs with disc protection and region code
    ☉ Convert Blu-ray/DVD to MP4, MKV, AVI, MOV, FLV, and other 180+ HD/SD formats
    ☉ Convert Blu-ray/DVD main movie to videos for space saving
    ☉ Convert 2D Blu-ray/DVD movies to 3D movies with 6 different 3D effects
    ☉ Fast conversion with NVIDIA CUDA, AMD APP and Intel Quick Sync acceleration technologies


Step 2: Enter Blu-ray Ripper module

Launch Leawo Prof. Media and then click “Convert” button on the sub-menu or “Blu-ray/DVD Ripper” button in the middle to enter the “Blu-ray Ripper” module.


Step 3: Add source Blu-ray files

Under the “Convert” module, click on “Add Blu-ray/DVD” to add source Blu-ray disc, folder or ISO image file. Just click the right button according to the source Blu-ray movie files you get.



  • Leawo Blu-ray Ripper offers 3 options to load source Blu-ray movie: Full Movie, Main Movie and Custom Mode. Full Movie allows you to import all titles, and Main Movie only imports the longest title by default but allows you to switch, while under Custom Mode you could freely choose any title(s) for loading. Choose the one according to your needs and load source Blu-ray movies.
  • You could play back loaded Blu-ray movie files, select subtitles and audio tracks, edit loaded Blu-ray movie titles, etc.

Step 4: Set output format

Hit the button next to the “Add Photo” button and then click “Change” option on the drop-down panel to enter the “Profile” window. Choose output format from either “Format” or “Device” group according to your device.


You could adjust video and audio parameters of output files to make sure the output files meet your media or player exactly, including video bit rate, aspect ratio, resolution, audio codec, sample rate, audio bit rate, audio channel, etc. To do these, just click the “Edit” option on the drop-down panel next to the “Add Photo” button.


Step 5: Set output directory and start converting

On the main interface, click the “Convert” in green on the sub-menu and then set output directory in the “Save to” box to save output video file. After that, hit the “Convert” button at the bottom to start converting Blu-ray to video files for your media player or devices.


Then, you only need to wait for the conversion to complete.

You could see that actually Leawo Blu-ray Ripper is much more powerful than MakeMKV in decrypting, ripping and converting Blu-ray/DVD movie files to video files. It even brings you more fun and Blu-ray/DVD ripping experience. You will no longer come across complicated MakeMKV Scsi errors.