Hmm, I'm a little confused...
I assumed the question was talking about files from any arbitrary database - but the "ALTER DATABASE ... MODIFY FILE" clause can only (if I understand correctly) be used to move tempdb files, not arbitrary files (not only that, but it also requires a server restart, which is not mentioned).
If this tempdb-limited answer is valid, then the startup with "-D" for moving master databases should also be valid, right?
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