Error:
SQL server setup cannot write system databases to C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\, because it contains a files previous installation. To continue move the databases from the specified folder, or specify a different installation folder. Then run SQL server setup again. Error 28111
Error Message:
Causes:
The SQL Server installation path having files from a lower edition so, SQL Server cannot overwrite higher edition database files. Please select the different installation folder.
Workaround 1:
When you are at the point of the failure, do not cancel the installation, Rename “MSSQL.1” folder from application path “C:\Program Files\Microsoft SQL Server” and later click on Retry continue installation.