Hi, thanks a lot, it fixed my problem, for those who have the same problem here some examples that I did:
mklink /J C:\Users\lion\Documents\3D-CoatV47\textures\patterns\3DC_Brushes "F:\Art\Library\3D Coat\3DC_Brushes_05\textures\patterns\3DC_Brushes"
mklink /J C:\Users\lion\Documents\3D-CoatV47\textures\patterns\Cracks_Wrinkles "F:\Art\Library\3D Coat\Cracks_Wrinkles\textures\patterns\Cracks-Wrinkles"
mklink is the code, /J is for choosing the directory, the first line is called Link, meaning it will create a shortcut for you in 3D Coat Document folder, so don't create a folder yourself write the text in Link, the second line is called Target, it will point to your external hard drive file location... you have to write the whole pass, and "" is for when your text contains Space like 3D Coat, you need to put it in "".
tnx.