This creates a new directory as expected:
new-item "c:\newdir" -itemtype directory
This also works:
$arr = "one", "two"
$arr | new-item -name {$_} -itemtype directory
Resulting in two new folders: c:\one and c:\two (assuming current directory is c:).
This fails with the error "The given path's format is not supported."
$arr = "c:\one", "c:\two"
$arr | new-item -name {$_} -itemtype directory
How can I make this work with a drive letter in the path?