WHY WE CANT CREATE A FOLDER NAMED CON

In Ms Dos several special  device files were available to aid in performing certain tasks, such as clearing the screen or deleting extraneous output from a program. In order to maintain backwards-compatibility , all versions of windows up to and including  windows 7 will refuse to allow you to create a file with these   “reserved device file names “ . The following names are reserved

     

  CON , PRN , AUX , NUL , COM1 , COM2 , COM3 , COM 4 , COM 5, COM6 , COM7 , COM8 , COM9 ,LPT1 , LPT2 , LPT3 , LPT4 , LPT5 , LPT6, LPT7 , LPT8, LPT9