So somebody setup sql server and you now want to move tempdb to another drive? Easy.
Fire up Query Analyser and run the commands:
ALTER DATABASE tempdb MODIFY FILE (name = ‘templog’, filename = ‘new-file-path‘)
Replace the new-file-path with the full path and filename you want to use. For example:
ALTER DATABASE tempdb MODIFY FILE (name = ‘templog’, filename = ‘E:Program FilesMicrosoft SQL ServerMSSQLDatatempdb.ldf’)
Then simply restart SQL Server, and delete the old tempdb files.