Okay, so I had this SQL dump, but no idea which Microsoft SQL server version it came from. It’s not that difficult to make a good guess though; In the file it shows the original database paths. If you’re lucky, you didn’t completely change the instance’s folders and your instance folder is named somewhat like these. SQL Server 2005 uses MSSQL.<n> (counting up, starting at 1, n+1) SQL Server 2008 uses MSSQL10.<INSTANCENAME> SQL Server 2008R2 uses MSSQL10_50.<INSTANCENAME> So, open the SQL backup file in a text editor of your choice and search for .mdf. That should put you at the end of the path you need.