[Cin] Not all blu-ray disk are the same ...

Terje J. Hanssen terjejhanssen at gmail.com
Tue Dec 27 01:57:34 CET 2022



Den 26.12.2022 23:01, skrev Andrew Randrianasulu:
> https://superuser.com/questions/879216/how-to-determine-whether-blu-ray-disc-is-htl-or-lth 
>
>
> lists two methods one with cdrecord + internet, another one using imgburn
>
> ===
>
> Here's the best way I've found:
>
> 1.
>
>     Determine the manufacturer code and media type of the media. On
>     Linux, I used |cdrecord|
>     <http://cdrtools.sourceforge.net/private/cdrecord.html> |dev=XXX
>     -atip | grep -i 'manufacturer\|media type'|, where |XXX| is the
>     code for the Blu-ray burner as listed by |cdrecord -scanbus|.
>

This give me an opportunity to discuss certain reported issues with 
access privilegies from K3b/Cdrecord.

I have also reported this as a possible K3b build bug to openSUSE 
bugzilla a couple of weeks ago
https://bugzilla.opensuse.org/show_bug.cgi?id=1206384

Suggestions are welcome how to troubleshoot and get rid of them, as they 
can be part of or main cause to my burning/disc problem. !?


    cdrecord -scanbus
    Cdrecord-ProDVD-ProBD-Clone 3.02a09 (x86_64-unknown-linux-gnu)
    Copyright (C) 1995-2016 Joerg Schilling
    cdrecord: Insufficient 'file read' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'file write' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'device' privileges. You may not be able to
    send all needed SCSI commands, this my cause various unexplainable
    problems.
    cdrecord: Insufficient 'network' privileges. You will not be able to
    do remote SCSI.
    cdrecord: No access. Cannot open '/dev/sg0'. Cannot open or use SCSI
    driver.
    cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure
    you are root.
    cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

    cdrecord dev=/dev/sr0 -atip | grep -i 'manufacturer\|media type'
    cdrecord: Insufficient 'file read' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'file write' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'device' privileges. You may not be able to
    send all needed SCSI commands, this my cause various unexplainable
    problems.
    cdrecord: Insufficient 'network' privileges. You will not be able to
    do remote SCSI.
    scsidev: '/dev/sr0'
    devname: '/dev/sr0'
    scsibus: -2 target: -2 lun: -2
    Warning: Open by 'devname' is unintentional and not supported.
    Linux sg driver version: 3.5.27
    Manufacturer: 'VERBAT'
    Media type: 'IM1'


Just now K3b/Cdrecord seems to not even write to more BD-RE DL discs :(

The above messages are also part of the current debugging output from 
K3b included here (sorry for the length):

    Devices
    -----------------------
    HL-DT-ST BD-RE BH10LS30 1.02 (/dev/sr0, CD-R, CD-RW, CD-ROM,
    DVD-ROM, DVD-R, DVD-RW, DVD-R DL, BD-ROM, BD-R, BD-RE, DVD+R,
    DVD+RW, DVD+R DL) [DVD-ROM, DVD-R Sequential, DVD-R Dual Layer
    Sequential, DVD-R Dual Layer Jump, DVD-RAM, DVD-RW Restricted
    Overwrite, DVD-RW Sequential, DVD+RW, DVD+R, DVD+R Dual Layer,
    CD-ROM, CD-R, CD-RW, BD-ROM, BD-R Sequential (SRM), BD-R Random
    (RRM), BD-RE] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P,
    RAW/R96R, Restricted Overwrite, Layer Jump, Random Recording,
    Sequential Recording, Sequential Recording + POW] [%7]

    System
    -----------------------
    K3b Version: 21.12.3
    KDE Version: 5.90.0
    Qt Version:  5.15.2
    Kernel: 5.14.21-150400.24.38-default

    Used versions
    -----------------------
    cdrecord: 3.2a09

    cdrecord
    -----------------------
    cdrecord: Insufficient 'file read' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'file write' privileges. You will not be able
    to open all needed devices.
    cdrecord: Insufficient 'device' privileges. You may not be able to
    send all needed SCSI commands, this my cause various unexplainable
    problems.
    cdrecord: Insufficient 'network' privileges. You will not be able to
    do remote SCSI.
    scsidev: '/dev/sr0'
    devname: '/dev/sr0'
    scsibus: -2 target: -2 lun: -2
    Warning: Open by 'devname' is unintentional and not supported.
    Linux sg driver version: 3.5.27
    SCSI buffer size: 64512
    Cdrecord-ProDVD-ProBD-Clone 3.02a09 (x86_64-unknown-linux-gnu)
    Copyright (C) 1995-2016 Joerg Schilling
    TOC Type: 1 = CD-ROM
    Using libscg version 'schily-0.9'.
    Driveropts: 'burnfree'
    atapi: 1
    Device type    : Removable CD-ROM
    Version        : 5
    Response Format: 2
    Capabilities   :
    Vendor_info    : 'HL-DT-ST'
    Identifikation : 'BD-RE  BH10LS30 '
    Revision       : '1.02'
    Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
    Current: BD-RE
    Profile: BD-ROM
    Profile: BD-R sequential recording
    Profile: BD-R random recording
    Profile: BD-RE (current)
    Profile: DVD-RAM
    Profile: DVD-R sequential recording
    Profile: DVD-R/DL sequential recording
    Profile: DVD-R/DL layer jump recording
    Profile: DVD-RW sequential recording
    Profile: DVD-RW restricted overwrite
    Profile: DVD+RW
    Profile: DVD+R
    Profile: DVD+R/DL
    Profile: DVD-ROM
    Profile: CD-R
    Profile: CD-RW
    Profile: CD-ROM
    Profile: Removable Disk (current)
    Using generic SCSI-3/mmc-3 BD-RE driver (mmc_bdre).
    Driver flags   : NO-CD BD MMC-3 BURNFREE
    Supported modes: PACKET SAO LAYER_JUMP
    Drive buf size : 2031616 = 1984 KB
    Drive pbuf size: 3850240 = 3760 KB
    Drive DMA Speed: 17771 kB/s 100x CD 12x DVD 3x BD
    FIFO size      : 4194304 = 4096 KB
    Track 01: data  39383 MB
    Total size:     39383 MB = 20164288 sectors
    Current Secsize: 0
         Capacity Blklen/Sparesz.  Format-type  Type
    24438784            36864         0x00  Unformated or Blank Media
    23652352            24576         0x00  Reserved (0)
    23259136             2048         0x01  Reserved (0)
    23652352            24576         0x30  Reserved (0)
    23259136            36864         0x30  Reserved (0)
    24307712             4096         0x30  Reserved (0)
    24438784             2048         0x31  Reserved (0)
    Format was needed.
    Starting to write CD/DVD/BD at speed 2 in real FORMAT mode for
    single session.
    Last chance to quit, starting real write in 3 seconds.
        2 seconds.
        1 seconds.
        0 seconds. Operation starts.
    Formatting media
    operation 0% done
    === last message repeated 29 times. ===
    Formatting time: 61.464s (00:01:01.464)
    Condition not caught: capacity_not_set.

    cdrecord command:
    -----------------------
    /usr/bin/cdrecord -v gracetime=2 dev=/dev/sr0 speed=2 -sao
    driveropts=burnfree -data -tsize=20164288s -



> 1.
>
>     Look up the manufacturer and media type codes at
>     http://www.blu-raydisc.info/licensee-list/discmanuid-licenseelist.php .
>     The table on that site identifies "recording type" (i.e. HTL or
>     LTH) and also write speed from these codes.
>
> === quote end====
>
> site worked when I clicked on link.
>
> Apparently LTH should be marked due to their bad compatibility with 
> earlier drives, but .... reality is less stellar :(

A quick look in the tables it seemed for me that all 50GB BD-R/RE DL 
discs use "HTL" recording type.


>
> and in imgburn
>
> ====
>
> With image burning software. ImgBurn <http://www.imgburn.com/> for 
> instance.
>
> In Imgburn main menu just click on anything writing related. For 
> example, "Write image file to disc"
>
> Now a new window pops up
>
> Please check that you have the correct burner selected in the left 
> hand side, if you have more than one disc burner.
>
> Scroll down on the right pane, and you find the info under "Recorded 
> Mark Polarity"
>
> ====
>
>
> HTL is apparently more durable....
>
> Terje posted link to Canadian site and I did little search on my own
>
> https://www.pcworld.com/article/423607/hard-core-data-preservation-the-best-media-and-methods-for-archiving-your-data.html
> (from 2016)
>
> to be honest I newer heard about HTL vs LTH when it comes to BDs....
>
> I found some ASUS  drive in my city, so *may be* I'll have some means 
> to test real disks in new year.
>
>

Many articles recommend to keep three types of media for archiving 
stored on at least two locations to spread the risk.
For camcorded video this envolves for me

 1. keep the source media (tape cassettes)
 2. a digitized version on portable expansion USB3 discs
 3. and on optical Blu-ray data discs and playable BD-video discs.


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