Mystery Behind Reserved Names

I got this forwarded email that tells me you can\’t name a folder called con in Windows and even at Microsoft, the whole Team, including Bill Gates, couldn\’t answer why this happened!

Now, before believing this urban legend, read below…

Actually, there is a reason why you can\’t name any folder or file con simply because there are some restriction in file names in Windows, including Windows XP. You\’ll think that this is a glitch at first, but it\’s not. Luckily, those people not using Windows would not get this problem.

Here are the list of several specially reserved file names in Windows:

  • CON
  • AUX
  • COM1
  • COM2
  • COM3
  • COM4
  • LPT1
  • LPT2
  • LPT3
  • PRN
  • NUL

CON stands for Console, the combination of keyboard and screen to handle input and output. AUX or COM1 are first serial communication port; COM2 to COM4 are other communication ports. LPT1 or PRN is the parallel port. Lastly, NUL is a dummy port.

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