NTSTATUS 0xC03A000C (STATUS_VHD_BITMAP

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: a virtual-disk block bitmap is inconsistent with its block data.

Could be also:
Constant	Type	OS
ERROR_VHD_BITMAP_MISMATCH	HRESULT	Windows

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STATUS_VHD_INVALID_BLOCK_SIZE	STATUS_VHD_PARENT_VHD_NOT_FOUND

STATUS_VHD_BITMAP_MISMATCH

STATUS_VHD_BITMAP_MISMATCH concerns the bitmap associated with a virtual-disk data block. The bitmap participates in deciding whether data for a virtual sector is present in the current file or must be obtained through another part of the layout, which is especially important for differencing disks.

Unlike STATUS_VHD_BLOCK_ALLOCATION_TABLE_CORRUPT, the provider has reached an allocated block but the block-level validity information does not agree with what it finds. Unlike STATUS_VHD_PARENT_VHD_NOT_FOUND, this is an inconsistency in data mapping, not merely an unavailable parent path.

Do not guess which sector wins

Preserve the child and every parent before any attach or merge attempt, because the correct source for a sector can depend on the chain.
Record the virtual offset, block index and whether the image is dynamic or differencing when the status is reported.
Use a format-aware validator or restore path; copying a block over its bitmap can silently select the wrong version of data.

References

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