How to Remove Knights of the Nine from Oblivion (Xbox 360)

You cannot uninstall Knights of the Nine separately on Xbox 360. It is baked into the Oblivion game data—there is no "DLC management" menu for individual expansions on 360.

Only Workaround: Clean Reinstall

1. Back Up Saves: System Settings → Memory → Hard Drive → Games → Oblivion → Copy saves to USB stick or Cloud (Gold required).
2. Delete Game Data: Highlight Oblivion in My Games → Press Y → Delete → Confirm "Delete game and all content."
3. Reinstall from Disc: Insert Oblivion disc (GOTY or standard). At install prompt, decline "Install Knights of the Nine" / "Install Shivering Isles" if offered separately.
4. Restore Saves: Copy back from USB/Cloud.

Critical Warnings

• Save Compatibility: Saves created with KotN active will not load on a version without it (missing quest data, items, scripts). You must start a new game.
• GOTY Discs: Some Game of the Year discs force-install all DLC; no opt-out. Check disc label: "Play Disc" + "Install Disc" usually allows selection.
• Digital Version: If bought via Xbox Live Marketplace, it's the GOTY bundle—no way to exclude KotN.

If you just want to avoid the "Prophet" questline popping up immediately: ignore the "Anvil" rumor. It won't auto-start until you sleep or wait 24h in-game. You can play 99% of Oblivion without touching KotN content.