As my default WP is accessed via the following example URL;
Sorry, that's a no.
an install where WP is in a folder & it has not been configured so the site URL of the main site is in the root
Unrelated to DM, you should use lowercase paths for your site URLS. In Linux, path names are case sensitive (ron.txt, Ron.txt & RON.txt can be 3 different files in the same folder).