Why I can't create some folder names in Windows?

its not only CON , there are other several keywords used by windows OS which they dont allow user to use it for folder names...

---------- Post added at 17:14 ---------- Previous post was at 17:03 ----------

these are old age tricks from windows

e.g prn, AUX, CLOCKS, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, ...
you can try the above examples tooo.....

---------- Post added at 17:26 ---------- Previous post was at 17:14 ----------

but you can create con folder from DOS... did you know that?

the command is

md\\.\\c:\con

thank you....very much but how we can implement the code in XP or windows 7......

i did not get what you said... explain in a better way.........

the code which u have given above...md\\.\\c:\con...can we implement in windows 7 OR xp....?

works anywhere but in dos command....

works with95 and xp, but did not try in 7 or vista.......

Those names are already in use by the OS, that's why you can reuse them. They are the named files used for basic input and output streams.
For example, if you copy a file to COM1, it doesn't create a new file, it send it out serially through com port 1.

Brian.