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STATUS_VOLUME_MOUNTED
The volume entered the mounted state
This success status is a state transition, not an error. Mounting means a file-system driver recognized the volume and attached it to the storage stack so namespace and file operations can proceed.
Consumers that cache volume capabilities should refresh them after this event. A remounted volume at the same drive letter can have a different serial number, file-system type, feature set, or security state.
What to inspect
- Record the volume GUID, serial number, file-system name, and mount point.
- Invalidate caches tied only to a drive letter or device path.
- Wait for any higher-level initialization required by filters, encryption, or clustered storage before assuming application readiness.
References
- Microsoft: FSCTL_IS_VOLUME_MOUNTED
- Microsoft: GetVolumeInformation
- Microsoft Open Specifications: NTSTATUS values
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