In all versions of Windows, we are unable to rename a file or a folder name as CON
without third-party file renaming software. Trying to do this in Windows 7 results in an error:
The specified device name is invalid.
Trying to save a file as con.txt
in Notepad leads to a similar error:
This file name is reserved for use by Windows.
Choose another name and try again.
Why can't we name a file or folder CON
in Windows?
Best Answer
"con" is the name of a system I/O device, the console.
And a couple others, I think.
In the old days it was common in DOS to create a file (and I still do this occasionally) with: