sqlserver还原master和msdb

--启动sqlserver服务单用户模式
net start "SQL Server (GJDB)" /m

--连接sqlserver
sqlcmd -S "node01\gjdb"

---恢复备份即可
use master
go

RESTORE DATABASE [master] FROM  DISK = N'S:\backup\system\master_full_20151115010000.bak' WITH  FILE = 1,NOUNLOAD,  REPLACE,  STATS = 5
GO

RESTORE DATABASE [msdb] FROM  DISK = N'S:\backup\system\msdb_full_20151115010003.bak' WITH   REPLACE
GO