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[Alcohol 120%] MDS image created from Aaru Format image contains more sectors than original image #764

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opened 2026-01-29 15:29:06 +00:00 by claunia · 2 comments
claunia commented 2026-01-29 15:29:06 +00:00
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Originally created by @TheRogueArchivist on GitHub (Jun 24, 2021).

Prerequisites

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

Check and fill as appropriate:

  • I was running Aaru under Windows 10...
  • I was running Aaru under Linux [version here]...
  • I was running Aaru under macOS [version here]...
  • ...in 32-bit
  • ...in 64-bit
  • ...using an Intel / AMD processor
  • ...using an ARM or Apple Silicon processor
    • Image format: Aaru Format
    • Application that created the image: Aaru
  • I was converting the image...
    • ...Destination image format: Alcohol 120%
  • I was listing the filesystem contents...
  • I was extracting the filesystem contents...
    • ...Filesystem:
    • Analyze command recognizes the filesystem
  • I was creating a metadata sidecar
  • I was checksumming the image
  • I was verifying the image

Description

When converting an Aaru Format image to MDS, the MDS file contains more sectors than the original image.

Exact command line used:

aaru i compare .\LNE100TX_V5_12.aaruf .\LNE100TX_V5_12.mds

Output of command execution with debug output enabled

aaru 5.2.99.3380-alpha+869a6dff built by DESKTOP-8B4K7NM in Debug, modified
Copyright c 2011-2021 Natalia Portillo

Input file 1 format identified by Aaru Format.
Input file 2 format identified by Alcohol 120% Media Descriptor Structure.
Comparing disk image characteristics
Comparing sectors...
Comparing sector 10386 of 10386...
Disc image 1: .\LNE100TX_V5_12.aaruf
Disc image 2: .\LNE100TX_V5_12.mds
Image sectors differ
Image 2 has more sectors
Images differ

Image

https://we.tl/t-qTJhJRRUX2

Originally created by @TheRogueArchivist on GitHub (Jun 24, 2021). ### Prerequisites * [X] Are you running the latest version? * [X] Can you reproduce the problem in the debug version? ### Check and fill as appropriate: * [X] I was running Aaru under Windows 10... * [ ] I was running Aaru under Linux [version here]... * [ ] I was running Aaru under macOS [version here]... * [ ] ...in 32-bit * [X] ...in 64-bit * [X] ...using an Intel / AMD processor * [ ] ...using an ARM or Apple Silicon processor * **Image format**: Aaru Format * **Application that created the image**: Aaru * [X] I was converting the image... * ...**Destination image format**: Alcohol 120% * [ ] I was listing the filesystem contents... * [ ] I was extracting the filesystem contents... * ...**Filesystem**: * [ ] Analyze command recognizes the filesystem * [ ] I was creating a metadata sidecar * [ ] I was checksumming the image * [ ] I was verifying the image ### Description <!-- Description of the bug --> When converting an Aaru Format image to MDS, the MDS file contains more sectors than the original image. ### Exact command line used: `aaru i compare .\LNE100TX_V5_12.aaruf .\LNE100TX_V5_12.mds` ### Output of command execution with debug output enabled ``` aaru 5.2.99.3380-alpha+869a6dff built by DESKTOP-8B4K7NM in Debug, modified Copyright c 2011-2021 Natalia Portillo Input file 1 format identified by Aaru Format. Input file 2 format identified by Alcohol 120% Media Descriptor Structure. Comparing disk image characteristics Comparing sectors... Comparing sector 10386 of 10386... Disc image 1: .\LNE100TX_V5_12.aaruf Disc image 2: .\LNE100TX_V5_12.mds Image sectors differ Image 2 has more sectors Images differ ``` ### Image <!-- Upload the image, compressed and with the number of this issue. --> <!--- If the image contains personal data contact the project lead, and the image contents will be handled confidentially under the GDPR requirements. --> https://we.tl/t-qTJhJRRUX2
claunia added the bugdump image format labels 2026-01-29 15:29:08 +00:00
claunia commented 2026-01-29 15:29:10 +00:00
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@TheRogueArchivist commented on GitHub (Jun 24, 2021):

A hash identical MDS image is created when converting from CCD to MDS as well.

@TheRogueArchivist commented on GitHub (Jun 24, 2021): A hash identical MDS image is created when converting from CCD to MDS as well.
claunia commented 2026-01-29 15:29:11 +00:00
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@TheRogueArchivist commented on GitHub (Jun 24, 2021):

The bug is caused by a difference in the MDS file, the MDF file remains unchanged between working and not working images.

@TheRogueArchivist commented on GitHub (Jun 24, 2021): The bug is caused by a difference in the MDS file, the MDF file remains unchanged between working and not working images.
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Reference: aaru-dps/Aaru-aaru-dps#764
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