Check out Webtools NG (specifically ExportTools NG).
While the files are still indexed in Plex, you can export a full list of all paths, then e.g. filter by the drive you lost.
Check out Webtools NG (specifically ExportTools NG).
While the files are still indexed in Plex, you can export a full list of all paths, then e.g. filter by the drive you lost.