I am working to bundle SQL Server 2014 Express with an application. I am using the following command line to install via an InstallShield prerequisite: /qs /INSTANCENAME=MYINSTANCE /ACTION="Install" /FEATURES=SQLEngine,Conn,SSMS
/SECURITYMODE=SQL /SAPWD="Password" /TCPENABLED=1 /SQLSVCACCOUNT="NT AUTHORITY\SYSTEM" /IACCEPTSQLSERVERLICENSETERMS
The installer I am using is SQLEXPRWT_x86_ENU.exe.
When the installer starts up their is a dialog named: Choose Directory for Extract Files. In earlier versions of SQL Server Express this dialog did not require the user to press Ok to continue. Since it takes several minutes to install
SQL Server Express I prefer to show the installation to the user, so they can see that something is taking place. The /q (Quiet) parameter will suppress this dialog, but nothing is seen for several minutes. Note: the Installer documentation Go to the complete details ...