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IMAPI_E_FILE_SYSTEM_FEATURE_NOT_SUPPORTED
IMAPI_E_FILE_SYSTEM_FEATURE_NOT_SUPPORTED means IMAPI recognized the selected filesystem but found a feature in the recorded layout that its importer does not support. This differs from “filesystem not found”: the format is known, yet the specific on-disc feature set cannot be represented by the import path.
Capture the filesystem type and mastering origin
- Log the imported filesystem type and the application or platform that created the source disc when known.
- Do not convert the error into a generic media-read failure if sectors can be read normally.
- If the goal is only to copy data, consider a file-level copy workflow rather than assuming IMAPI multisession import can preserve the existing layout.
The relevant compatibility boundary is the importer, not nominal adherence to a broad family name such as UDF or ISO 9660. Standards define extensible filesystem structures and revisions, while IMAPI supports a particular subset for image import and subsequent writing. Recreating the same import configuration against the same disc will not remove an unsupported recorded feature.
ImportFileSystem · IFileSystemImage · ECMA-167
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