I will show a little hack: Go to admin panel -> Categories - > Edit first category -> In the TinyMCE editory -> click insert new image (then will show new window with RoxyFileMan), select uploaded -> Create new folder -> put the name .../../../../MyCatalog - by this way you can create new folder in every places on the server.
The next article will be - how to read /edit / delete / file on your server. But this article I will publish on the Internet.
.../../../../MyCatalog - you can create new folder in every places on the server.
This creates a directory in the root c:\wwwroot\nopCommerce\MyCatalog I can not get any higher than that as it creates an error and I can only create a directory in the same website Which is what you would expect as it is blocked by Windows Security Where is the directory created in your system ? I can not upload any file there - what is the command to do that ?