Thanks so much

one more that I'm worried about

MSI (s) (70:54) [04:34:48:713]: Machine policy value 'DisableUserInstalls' is 0

MSI (s) (70:54) [04:34:48:713]: Adding MSIINSTANCEGUID to command line.

MSI (s) (70:54) [04:34:48:804]: End dialog...

Thanks so much...

I thought that every checkpoint that the mdf file would be modified and can be shown on the windows explorer..

I was so wrong..

have you checked the port?

I had the similar issue before, then found that it's the port number...

the named instance port is not like 1433, so I have to add Alias...

Do we need to do this:

ALTER DATABASE mssqlsystemresource

MODIFY FILE (NAME=data, FILENAME= 'new_path_of_master\mssqlsystemresource.mdf');

GO

ALTER DATABASE mssqlsystemresource

MODIFY FILE (NAME=log, FILENAME= 'new_path_of_master\mssqlsystemresource.ldf');

GO

I remember before...