The SQL Server Upgrade Wizard does not remove SQL Server 6.5 from the computer. After upgrading, you will have two installations of SQL Server and two sets of data. SQL Server 6.5 and SQL Server 7 installations are completely separate and independent. You should leave SQL Server 6.5 on the computer until you verify the success of the upgrade. Optionally, you can remove SQL Server 6.5 devices to save disk space if you use the tape upgrade option. To switch from one version of SQL Server to the other, use the Microsoft SQL Server-Switch application on the Start menu, or run Vswitch.exe in the C:\Mssql7\Binn directory.
To switch from one version of SQL Server to the other, use the Microsoft SQL Server-Switch application on the Start menu, or run Vswitch.exe in the C:\Mssql7\Binn directory.