We had a server running Microsoft SQL Server 2014 databases on Hyper-V. I exported it (with `C:` and `D:` drives) and opened on other machine.

I could not start the `MSSQLSERVER` service because it said the *master* db needed to be rebuilt.

I've rebuilt the *master* db, but now the databases are empty, I cannot see databases except *master*, *model*, *msdb*, and *tempdb*.

I have all databases (mdf and ldf files) in this folder `D:\Microsoft SQL Server\MSSQL12.MSSQLSERVER\MSSQL\DATA`. How to restore them and not lose all functionality?