I'm getting an error message saying 'The type of the file system is unknown'. What should I do?

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Grade: Education Subject: Support
I'm getting an error message saying 'The type of the file system is unknown'. What should I do?
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This usually indicates a severely corrupted file system. Try running chkdsk with the `/x` parameter first (e.g., `chkdsk /x X:`). This forces the volume to dismount first. If that fails, you might need to use a third-party disk repair tool or consider data recovery options.