# Rebuild full index

**Rebuild full index** re-scans your whole vault and rebuilds the Operon task index from scratch. Run it from anywhere; it does not depend on which note is open.

## How it works

- Running it shows a short "rebuilding" notice while Operon reads every note again.
- When it finishes, a second notice reports how many tasks the fresh index holds.

The rebuild only reads your Markdown. It does not change, move, or delete any task; your notes stay the source of truth, and the command simply makes the index match them again. See [Markdown task storage](/docs/docs-045-markdown-task-storage/).

## When to use it

The index normally keeps itself current as you edit, so you rarely need this. Reach for it when the index may have drifted from your notes:

- Tasks are not appearing where you expect.
- A file was edited outside Obsidian, by a sync client, a script, or another editor.
- You suspect the index is stale after an unusual change.

If tasks are missing, this is one of the first things to try; the full picture is in [Missing tasks](/docs/docs-054-missing-tasks/).

## Related

- [Operon Docs MOC](/docs/docs-001-operon-docs-moc/)
- [Show index stats](/docs/docs-092-show-index-stats/)