NTSTATUS 0xC00004A4 (STATUS_VOLUME_NOT_CLUSTER

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The volume is not aligned to the required storage geometry.

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STATUS_FILE_PROTECTED_UNDER_DPL	STATUS_NO_PHYSICALLY_ALIGNED_FREE_SPACE_FOUND

STATUS_VOLUME_NOT_CLUSTER_ALIGNED

The file-system allocation geometry is not physically aligned

Here, cluster refers to file-system allocation units, not failover-cluster membership. The status means the volume geometry does not align the required file-system clusters with the underlying disk or virtual-disk boundaries for the requested operation.

Record partition offsets, file-system cluster size, physical and logical sector sizes, and any storage-space interleave. Changing only one layer can leave the full stack misaligned. Back up data before repartitioning or reformatting because alignment is normally established when the storage layout is created.

What to inspect

Inspect disk, partition, virtual disk, and file-system geometry together.
Compare the required alignment with the actual starting offset.
Recreate the layout only after a tested backup and migration plan.

References

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