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STATUS_DATA_LOST_REPAIR
File-system repair completed with possible data loss
This warning is produced when Windows found corruption in a file and repaired the file, but the repaired result may not preserve every byte of the original data.
Treat it as a file integrity event. The immediate question is not only whether the volume is now consistent, but whether the repaired file must be restored from backup or regenerated from a trusted source.
What to inspect
- Identify the repaired file and compare it with a backup or known-good copy.
- Inspect file-system, storage and disk health events around the repair.
- Do not silently accept the repaired file for security-sensitive or database workloads.
References
- Microsoft: Creating, modifying, and deleting a change journal
- Microsoft: Master File Table
- Microsoft Open Specifications: NTSTATUS values
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