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"Error writing subchannel to output image, not continuing..." #189

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opened 2026-01-29 15:12:34 +00:00 by claunia · 0 comments
claunia commented 2026-01-29 15:12:34 +00:00
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Originally created by @TheRogueArchivist on GitHub (Jan 25, 2018).

Prerequisites

  • Are you running the latest version?
  • Can you reproduce the problem in the debug version?

Check and fill as appropiate:

  • I was running DiscImageChef under Windows 10...
  • I was running DiscImageChef under Linux [version here]...
  • I was running DiscImageChef under FreeBSD [version here]...
  • I was running DiscImageChef under macOS [version here]...
  • ...using .NET Framework [version here]...
  • ...using .NET Core [version here]...
  • ...using Mono [version here]...
  • ...in 32-bit
  • ...in 64-bit

Description

When reading a CD-ROM, DiscImageChef tells me "Error writing subchannel to output image, not continuing..." and stops.

Exact command line used:

DiscImageChef.exe dump-media -i E: -o test.mds

Expected behavior:

It should dump the CD-ROM without using -f to force it (which seems to work).

Actual behavior:

"Error writing subchannel to output image, not continuing..."

If command was expected to work with a device fill this:

  • Manufacturer: Memorex
  • Model: MRX-650LE v7
  • Bus:
    • Parallel ATA
    • Serial ATA
    • SCSI (any)
    • ATAPI (mark above if parallel or serial)
    • USB
    • FireWire
    • PCMCIA
    • SecureDigital
    • MultiMediaCard

Output of command execution with debug output enabled

The Disc Image Chef 4.0.99.0
Copyright c 2011-2018 Natalia Portillo

DEBUG (Dump-Media command): --debug=True
DEBUG (Dump-Media command): --verbose=False
DEBUG (Dump-Media command): --device=E:
DEBUG (Dump-Media command): --raw=False
DEBUG (Dump-Media command): --stop-on-error=False
DEBUG (Dump-Media command): --force=False
DEBUG (Dump-Media command): --retry-passes=5
DEBUG (Dump-Media command): --persistent=False
DEBUG (Dump-Media command): --resume=True
DEBUG (Dump-Media command): --lead-in=False
DEBUG (Dump-Media command): --encoding=
DEBUG (Dump-Media command): --output=test.mds
DEBUG (Dump-Media command): --format=
DEBUG (Dump-Media command): --force=False
DEBUG (Dump-Media command): --options=
DEBUG (Dump-Media command): Parsed options:
DEBUG (SCSI Device): INQUIRY took 1.0035 ms.
DEBUG (Windows devices): NT device path:
InstanceId: USB\VID_0718&PID_4006\SSFCO0023411220
DEBUG (ATA Device): IDENTIFY PACKET DEVICE took 0.5431 ms.
Output image format: Alcohol 120% Media Descriptor Structure.
DEBUG (SCSI Device): TEST UNIT READY took 4.0135 ms.
DEBUG (SCSI Device): GET CONFIGURATION took 3.0105 ms.
DEBUG (SCSI Device): READ TOC/PMA/ATIP took 3.0099 ms.
DEBUG (SCSI Device): READ TOC/PMA/ATIP took 2.0064 ms.
DEBUG (SCSI Device): READ DISC INFORMATION took 3.512 ms.
DEBUG (SCSI Device): READ TOC/PMA/ATIP took 4.0137 ms.
DEBUG (SCSI Device): READ TOC/PMA/ATIP took 2.0068 ms.
DEBUG (SCSI Device): READ TOC/PMA/ATIP took 5875.5214 ms.
Checking if drive supports full raw subchannel reading...
DEBUG (SCSI Device): READ CD took 107.8675 ms.
Full raw subchannel reading supported...
Building track map...
Checking mode for track 1...
DEBUG (SCSI Device): READ CD took 6.0206 ms.
Track 1 is MODE1
DEBUG (SCSI Device): READ CD took 0 ms.
DEBUG (SCSI Device): READ CD took 0 ms.
DEBUG (SCSI Device): READ CD took 18.0619 ms.
Reading 16 sectors at a time.
Device reports 331047 blocks (810403056 bytes).
Device can read 16 blocks at a time.
Device reports 2448 bytes per logical block.
SCSI device type: MultiMediaDevice.
Media identified as CDROM.
DEBUG (SCSI Device): READ CD took 0 ms.
Error writing subchannel to output image, not continuing...
Uploading partial statistics file C:\Users\silas\AppData\Roaming\Claunia.com\DiscImageChef\Statistics\PartialStats_20180125223607822.xml
Originally created by @TheRogueArchivist on GitHub (Jan 25, 2018). ### Prerequisites * [X] Are you running the latest version? * [X] Can you reproduce the problem in the debug version? ### Check and fill as appropiate: * [X] I was running DiscImageChef under Windows 10... * [ ] I was running DiscImageChef under Linux [version here]... * [ ] I was running DiscImageChef under FreeBSD [version here]... * [ ] I was running DiscImageChef under macOS [version here]... * [ ] ...using .NET Framework [version here]... * [ ] ...using .NET Core [version here]... * [ ] ...using Mono [version here]... * [ ] ...in 32-bit * [ ] ...in 64-bit ### Description When reading a CD-ROM, DiscImageChef tells me "Error writing subchannel to output image, not continuing..." and stops. ### Exact command line used: DiscImageChef.exe dump-media -i E: -o test.mds ### Expected behavior: It should dump the CD-ROM without using -f to force it (which seems to work). ### Actual behavior: "Error writing subchannel to output image, not continuing..." ### If command was expected to work with a device fill this: * **Manufacturer**: Memorex * **Model**: MRX-650LE v7 * **Bus**: * [ ] Parallel ATA * [ ] Serial ATA * [ ] SCSI (any) * [ ] ATAPI (mark above if parallel or serial) * [X] USB * [ ] FireWire * [ ] PCMCIA * [ ] SecureDigital * [ ] MultiMediaCard ### Output of command execution with debug output enabled ``` The Disc Image Chef 4.0.99.0 Copyright c 2011-2018 Natalia Portillo DEBUG (Dump-Media command): --debug=True DEBUG (Dump-Media command): --verbose=False DEBUG (Dump-Media command): --device=E: DEBUG (Dump-Media command): --raw=False DEBUG (Dump-Media command): --stop-on-error=False DEBUG (Dump-Media command): --force=False DEBUG (Dump-Media command): --retry-passes=5 DEBUG (Dump-Media command): --persistent=False DEBUG (Dump-Media command): --resume=True DEBUG (Dump-Media command): --lead-in=False DEBUG (Dump-Media command): --encoding= DEBUG (Dump-Media command): --output=test.mds DEBUG (Dump-Media command): --format= DEBUG (Dump-Media command): --force=False DEBUG (Dump-Media command): --options= DEBUG (Dump-Media command): Parsed options: DEBUG (SCSI Device): INQUIRY took 1.0035 ms. DEBUG (Windows devices): NT device path: InstanceId: USB\VID_0718&PID_4006\SSFCO0023411220 DEBUG (ATA Device): IDENTIFY PACKET DEVICE took 0.5431 ms. Output image format: Alcohol 120% Media Descriptor Structure. DEBUG (SCSI Device): TEST UNIT READY took 4.0135 ms. DEBUG (SCSI Device): GET CONFIGURATION took 3.0105 ms. DEBUG (SCSI Device): READ TOC/PMA/ATIP took 3.0099 ms. DEBUG (SCSI Device): READ TOC/PMA/ATIP took 2.0064 ms. DEBUG (SCSI Device): READ DISC INFORMATION took 3.512 ms. DEBUG (SCSI Device): READ TOC/PMA/ATIP took 4.0137 ms. DEBUG (SCSI Device): READ TOC/PMA/ATIP took 2.0068 ms. DEBUG (SCSI Device): READ TOC/PMA/ATIP took 5875.5214 ms. Checking if drive supports full raw subchannel reading... DEBUG (SCSI Device): READ CD took 107.8675 ms. Full raw subchannel reading supported... Building track map... Checking mode for track 1... DEBUG (SCSI Device): READ CD took 6.0206 ms. Track 1 is MODE1 DEBUG (SCSI Device): READ CD took 0 ms. DEBUG (SCSI Device): READ CD took 0 ms. DEBUG (SCSI Device): READ CD took 18.0619 ms. Reading 16 sectors at a time. Device reports 331047 blocks (810403056 bytes). Device can read 16 blocks at a time. Device reports 2448 bytes per logical block. SCSI device type: MultiMediaDevice. Media identified as CDROM. DEBUG (SCSI Device): READ CD took 0 ms. Error writing subchannel to output image, not continuing... Uploading partial statistics file C:\Users\silas\AppData\Roaming\Claunia.com\DiscImageChef\Statistics\PartialStats_20180125223607822.xml ```
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Reference: aaru-dps/Aaru-aaru-dps#189
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