1 Start Microsoft SQL Server in a single user mode. SQLSERVR.EXE -C - M -S {InstanceName} 2 Execute the RESTORE DATABASE statement to restore the Master database backup, specify: To restore the backup device of the Master database backup. If you have created any user database after backing up the Master database, you will not be able to access those databases after the Master database is restored, so you must re-attach the database to SQL Server
