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E_IMAPI_DF2TAO_MEDIA_IS_NOT_BLANK
E_IMAPI_DF2TAO_MEDIA_IS_NOT_BLANK means the selected medium already contains written content and therefore cannot be used by the IMAPI Track-at-Once audio format. Microsoft defines IDiscFormat2TrackAtOnce for audio writing to blank CD-R or CD-RW media.
Verify blankness separately from media type
- Record current physical media type and existing-track/used-sector information.
- Do not confuse a rewritable CD-RW with a currently blank CD-RW; rewritable capability alone does not make written media blank.
- Use an erase workflow for erasable media when destructive reuse is intended, then re-check support and blank state.
This differs from E_IMAPI_DF2TAO_MEDIA_IS_NOT_SUPPORTED. A blank DVD or another optical format can be blank yet still unsupported by Track-at-Once. Conversely, a supported CD-R/CD-RW can fail because it has already been written. The diagnostic record should therefore preserve both physical media type and blank/used state.
IDiscFormat2TrackAtOnce · PrepareMedia · Checking media support
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