Converting the FileSystemObject's Add Method
Definition: Adds a new folder to a collection of folders. This is similar to the CreateFolder method.
In PowerShell, you use the New-Item cmdlet to create a new folder, specifying three parameters:
-path The path to the new folder.
-name The name of the new folder.
-type The type of item you’re creating. In this case we’re creating a directory.
New-Item -path C:\Scripts -name "New Folder" -type directory
PowerShell has also aliased the DOS command mkdir for creating a new folder:
mkdir "C:\Scripts\New Folder"