Asagidaki yontemle default backup directory degistirebiliriz. If we open the registry using REGEDIT or some other tool and if you navigate to this key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.2\MSSQLServer ya da 2008 icin HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQLServer(BackupDirectory dosya tipi REG_SZ buraya directory direct yazın) or similar for your instance of SQL Server we can see the following information The highlighted line below shows the default directory for the backups for this one instance.
