Rosetta Check Reset Spotlight index

Reset your Spotlight index

Rosetta Check noticed your Spotlight index is stale. Rebuilding it takes a few terminal commands and lets the app see your installed apps accurately again.

Why this matters

Rosetta Check uses macOS Spotlight metadata to discover your installed applications and read their architecture information. When the Spotlight index is corrupted or out of date, the app can miss applications, report the wrong architecture, or show apps you've already deleted. Rebuilding the index fixes all three.

1

Open Terminal

Press ⌘ Space to open Spotlight, type Terminal, and press Return.

2

Rebuild the index

Paste these four commands into Terminal and press Return after each one. You'll be prompted for your Mac password the first time — that's sudo asking for permission, not us.

Reset Spotlight 
sudo mdutil -i off -a
sudo mdutil -E -a
sudo rm -rf /System/Volumes/Data/.Spotlight-V100
sudo mdutil -i on -a

What each line does: turn indexing off on every volume, erase the existing indexes, delete the leftover index store on your data volume, then turn indexing back on so macOS rebuilds it from scratch.

3

Restart your Mac

Reboot now, then give macOS about 15–20 minutes to rebuild the index in the background before you check it. You can keep using your Mac while it works.

4

Verify it worked

Run this to check the index status:

Check status 
sudo mdutil -s -a

You should see:

Indexing enabled. Indexing and searching enabled.

What happens next

After the restart, macOS rebuilds the Spotlight index in the background. On a typical Mac with an SSD this takes about 15–20 minutes. You can keep using your Mac normally while it works — Spotlight searches will just be incomplete until it finishes.

Once it's done, open Rosetta Check and trigger a fresh scan. Your app list should now be accurate.

Still seeing problems?

  • Make sure the rebuild has actually finished — run the check command above. While it's still indexing, results stay stale.
  • Check that /Applications isn't in your Spotlight Privacy list (System Settings → Spotlight → Search Privacy).
  • On a large or nearly-full drive the rebuild can take longer than 20 minutes — give it more time and re-run the check command until it reports indexing enabled.
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