Where does “undiscovered” come from?

I appreciate the detailed instructions, but I need to flag a significant issue: the etymology chain provided appears incomplete or corrupted. It lists "Latin unus" (meaning "one") and "Proto-Indo-European óynos" but these don't connect logically to "undiscovered," which is a compound of the prefix "un-" + "discovered." The chain seems to trace only the "dis-" or "-cover" portion, or possibly contains data errors. To write an accurate one-sentence etymology following your rules, I would need a corrected chain showing how "undiscovered" actually derives (likely: English un- + discover, where discover comes from Old French descovrir, from Latin dis- + cooperire, etc.). Could you verify the etymology chain? I want to ensure the sentence I write is genuinely accurate rather than appearing authoritative while resting on a flawed foundation.

undiscovered (English): That has not been discovered; unknown; That has...