Now you have to create the main directory ['MIDASHOME'] if it does not already exist and the subdirectory [.95NOV ]. You might need system privileges to do this. Type:
$ SET DEF MID_DISK:[0,0]
$ CREATE/DIR ['MIDASHOME']
$ SET DEF MID_DISK:['MIDASHOME']
$ CREATE/DIR [.95NOV ]
and if you also want a directory for the demos and test data (highly recommended):
$ CREATE/DIR [.DEMO]
$ SET DEF MID_DISK:['MIDASHOME'.DEMO]
$ CREATE/DIR [.DATA]