NTFS doesn't care if you have a file called "con", e.g. in PowerShell you can do:

    New-Item -ItemType File -Path "\\?\d:\con"

and get "D:\con", where you can't create it directly as "D:\con". It's the Win32 API which intercepts "con" for backwards compatibility, because it was a meaningful name in MS-DOS. But it's fine as a filesystem path.

There's other fun Windows/NTFS Path things here: https://hackertimes.com/item?id=17307023 and Google Project Zero's deep dive into Win32 and NT path handling: https://googleprojectzero.blogspot.com/2016/02/the-definitiv...