I'm installing SQL Server 2012 from the command line as part of an installer I'm creating.

I want to use mixed security (eg to allow both SQL and Windows authentication).

From looking at the Microsoft install guide I can see that setting /SECURITYMODE to SQL, and /SAPWD to a password, will give SQL mode, and by not setting them, I can get the default (Windows Authentication).

But how do I specify that I want to use mixed mode at the command line?

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