Unique folders

You can't create a folder names con or aux or com1 or com2 or com3 or com4 or com5 or com6 or com7 or com8 or com9.

The reason is there keywords are reserved by dos.

So if you want to create folders using these names follow this simple trick...

Go to dos prompt;

Then type md .\con\. This will create a folder named con.

If you want to delete the folder repeat the same procedure with rmdir .\con\.