Should I detach system databases before detaching all of the user databases? Which database should I move first? I tried a trial run on the test instance and I moved the temp, msdb, user and then the master and I see some of the user databases are detached although if I run the sql select physical_name from sys.master_files, I can see the location of the datafile and log file and they are not located in the same drive where I have moved. Please advice. Thanks in advance for all the advices.