There are two ways to drop a dump device using SQL Enterprise Manager: from the Database Backup/Restore dialog box while you manage backup and restoration, or directly from the Server Manager window.
When you drop a dump device, all data that has been backed up to that device is also dropped.
To drop a dump device from the Server Manager windowA confirmation box appears.
The dump device is dropped.
You must delete the device's filename from the directory where it is located. Use File Manager or the operating-system del command. It is not necessary to shut down and restart SQL Server.
To drop a dump device from the Database Backup/Restore dialog boxThe Database Backup/Restore dialog box appears.
The Edit Dump Device dialog box appears.
A confirmation box appears.
You can also drop a dump device by using the sp_dropdevice stored procedure. For information, see the Microsoft SQL Server Transact-SQL Reference.
Dropping a device removes the device from the sysdevices table.