Pattern to record: The partition exists but its file system is reported as unknown.

Identify the storage layer

This guide applies to an NTFS-formatted Windows volume. Confirm the file system and physical-drive condition before interpreting directory, permission or repair messages; logical repair cannot make failing media reliable. One possible explanation is that the primary structure describing the volume cannot be read correctly.

Protect data before repair

Avoid writing repairs to the only copy of important data. Formatting writes new headers over evidence needed for recovery.

Evidence to check on the protected copy

1. Image or clone unstable media first, then examine file-system and storage health separately.
2. Inspect primary and backup headers without creating a new file system.

Recovery and verification

If the checks support this cause, restore a valid backup header or recover data using the correct geometry. Verification should cover verified startup, file permissions, large file reads, updates and backup.

For an assessment of your Windows computer, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.