I have indexed a drive that I would like to make its content directly visible in a document library.
Exemples:
Shared drive/sales content should appear in Sharepoint/sales/document library
Hope I was clear.
You can't really do that.
Best options are to use a page viewer web part, pointed to your network share to make it appear as if the files are in SharePoint or create a search result that combines your external share and your document library content into a single result source and make it available via search results web parts.