What does HRESULT 0xC0AA0405 (E_IMAPI_DF2DATA_MEDIA_NOT_BLANK) mean?

E_IMAPI_DF2DATA_MEDIA_NOT_BLANK

E_IMAPI_DF2DATA_MEDIA_NOT_BLANK is a specific overwrite-policy failure. IMAPI documents that writing over non-blank media is not allowed unless IDiscFormat2Data::ForceOverwrite is set to VARIANT_TRUE. The property applies to overwritable media types and is distinct from incremental append logic.

Decide explicitly between append and overwrite workflows

• Read ForceOverwrite and CurrentMediaStatus from the same format object.
• If preserving existing sessions, use the multisession/import path rather than enabling overwrite merely to suppress the error.
• If destructive replacement is intended and the medium supports it, set ForceOverwrite before the write and surface that choice clearly to the user.

The correct response depends on data-retention intent. Blindly enabling overwrite can destroy existing content, while erasing media is not equivalent to importing and extending a prior session. This HRESULT is useful precisely because it stops the writer before a destructive policy is assumed. Record the physical media type and media-state flags with the application’s requested mode.

ForceOverwrite · CurrentMediaStatus · IDiscFormat2Data

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