• In SQL Server Configuration Manager, click [SQL Server Services].
• In the right pane, right-click SQL Server, and then click [Properties].




• On the Startup Parameters tab, type the parameter .m in the specify startup parameter box and click on [Add] and click on [OK]




• Restore the database engine afterward.

Important:

When you start SQL Server in single-user mode, first stop SQL Server Agent.

Otherwise, SQL Server Agent might connect first, preventing you from connecting as a second user.

>RESTORE DATABASE master FROM ${backup_device} WITH REPLACE

${backup_device} is the database file restored from the OBS:

C:\>sqlcmd
1>RESTORE DATABASE master FROM DISK = .C:\temp\master.bak. WITH REPLACE;
2>GO