NDF MDF
Not possible

Convert NDF to MDF

Can you convert NDF to MDF?
QUICK ANSWER
Is it possible to convert NDF to MDF?
No - not a direct conversion.

NDF and MDF are structurally identical; an NDF is a secondary data file that cannot be promoted to or merged into an MDF without SQL Server. You cannot simply rename NDF to MDF.

No direct path
Also to MDF: MDX · SDF · CCD

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Last verified Oct 2026

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Converting NDF to MDF

A .NDF file and a .MDF file hold different kinds of data, so there is no direct way to turn one into the other.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

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