Query related to Authentication Mode

Hi Experts,

I have a query regarding Authentication Mode.

A. I want to Install ABAP system on MSSQL 2008 R2. In this case, authentication mode is "Windows Authentication Mode"

B. Now I want to Install JAVA system on the same host and want to use same SQL server , then what will happen to Authentication Mode ?

     for JAVA system, Authentication mode should be Mixed Mode (Windows authentication and SQL Server authentication)

     Will SAPINST change the Authentication mode from Windows to Mixed while installing JAVA system for same SQL server Instance.

Regards,

Arpit.