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VDS_E_NO_VALID_LOG_COPIES
Dynamic disks rely on Logical Disk Manager metadata to describe pack, disk, volume, and plex configuration. Microsoft documents that dynamic-disk configuration information is replicated and is more robust than a single basic partition table. This HRESULT means VDS cannot find a valid log copy from which to reconstruct the pack. It is therefore a metadata-availability failure, not a file-system corruption result.
Why this state matters
Preserve every disk in the pack before destructive changes. Determine which disks are present, readable, and recognized as members, then collect volume-manager and storage I/O events. Cleaning or converting one disk can destroy a remaining damaged-but-recoverable metadata copy. Recovery decisions should be made for the pack as a set, because the missing valid log may be a consequence of multiple disk failures or inconsistent generations.
Diagnostic focus
- Inventory all disks that belong or previously belonged to the dynamic pack.
- Check each disk for readability and volume-manager metadata-related I/O failures.
- Preserve raw layout and configuration evidence before clean or conversion operations.
- Treat recovery as a pack-level problem rather than repairing one visible volume in isolation.
Technical references
MS-VDS error codes · Basic and Dynamic Disks · VDS Pack Object · VDS_VOLUME_STATUS · VDS common return codes
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