Modifica così:
USE master;
GO
RESTORE DATABASE ARCHIVIODB
FROM DISK = N'C:\programmi\Microsoft SQL Server\MSSQL.2\MSSQL\Backup\ARCHIVIODB.BAK'
WITH
FILE = 1,
NOUNLOAD,
REPLACE,
STATS = 10
GO
--
Alessandro Alpi | SQL Server MVP
http://www.alessandroalpi.net
http://blogs.dotnethell.it/suxstellino
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http://italy.mvps.org