While this may be helpful for Windows users, since the original poster is on a Mac (as are others), this doesn't help there. And so far, no one seems to have an answer for the Mac folks. It seems that even the Dropbox folks don't have a clue. Which sadly is about par for the course these days when it comes to support from tech companies.
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I told Dropbox to not backup an external drive; now I've changed my mind","moderationData":{"__ref":"ModerationData:moderation_data:563115"},"body":"I was able to copy a hidden file from a drive that IS being backed up to a drive DB was NOT backing up and that seems to have solved my problem. But I’m on a Mac so I don’t know if ot is applicable to other operating systems.","body@stripHtml({\"removeProcessingText\":false,\"removeSpoilerMarkup\":false,\"removeTocMarkup\":false,\"truncateLength\":200})@stringLength":"203","kudosSumWeight":0,"postTime":"2021-12-08T07:27:02.047-08:00","lastPublishTime":"2021-12-08T07:27:02.047-08:00","metrics":{"__typename":"MessageMetrics","views":2150},"visibilityScope":"PUBLIC","placeholder":false,"originalMessageForPlaceholder":null,"isEscalated":null,"solution":false,"entityType":"FORUM_REPLY","eventPath":"category:101001000/category:English/community:mxpez29397board:101001014/message:538760/message:563115","replies":{"__typename":"MessageConnection","pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null},"edges":[{"__typename":"MessageEdge","cursor":"MjUuM3wyLjF8aXwzfDUyOjF8aW50LDU2NDI4MCw1NjQyODA","node":{"__ref":"ForumReplyMessage:message:564280"}}]},"customFields":[],"attachments":{"__typename":"AttachmentConnection","edges":[],"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"ModerationData:moderation_data:564280":{"__typename":"ModerationData","id":"moderation_data:564280","status":"APPROVED","rejectReason":null,"isReportedAbuse":false,"rejectUser":null,"rejectTime":null,"rejectActorType":"member"},"ForumReplyMessage:message:564280":{"__typename":"ForumReplyMessage","uid":564280,"id":"message:564280","revisionNum":1,"author":{"__ref":"User:user:463112"},"readOnly":false,"repliesCount":7,"depth":5,"hasGivenKudo":false,"subscribed":false,"board":{"__ref":"Forum:board:101001014"},"parent":{"__ref":"ForumReplyMessage:message:563115"},"conversation":{"__ref":"Conversation:conversation:538760"},"subject":"Re: I told Dropbox to not backup an external drive; now I've changed my mind","moderationData":{"__ref":"ModerationData:moderation_data:564280"},"body":"What was the hidden file you copied? Having the same issue but can't see anything obvious - even the reformat option isn't working for me.
Some option to reset the list of external drives in preferences or similar would be ideal.
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