OptiClear

What is .Spotlight-V100 on Mac?

.Spotlight-V100 sits at /System/Volumes/Data/.Spotlight-V100. macOS uses it for Spotlight search index. On an active Mac it typically holds 1 GB – 20 GB.

Last updated: 2 min read

File Location
/System/Volumes/Data/.Spotlight-V100
What Gets Cleaned
Spotlight search index
Space you get back
1 GB – 20 GB
Comes back by itself
As Spotlight re-indexes the disk

The part most guides leave out

On current macOS there is no .Spotlight-V100 at the root of your disk. The index for your files lives at /System/Volumes/Data/.Spotlight-V100 and belongs to root, so the Finder cannot touch it. mdutil erases and rebuilds it cleanly; rm does not.

What happens if you delete it

Removing it works, but the right tool is not dragging the folder to the Trash.

What you actually lose: Spotlight results for a few hours

Full guide: .Spotlight-V100 →

See it working

OptiClear — Scan overview — every category on one screen
Scan overview — every category on one screen
OptiClear — Large and aging files, ranked by what they cost you
Large and aging files, ranked by what they cost you
OptiClear — Developer caches: Xcode, npm, Docker, package managers
Developer caches: Xcode, npm, Docker, package managers

Let OptiClear find these files

Doing this by hand is slow and easy to get wrong. OptiClear scans your Mac, lists every related file with its size, and moves only what you select to the Trash, so you can still restore it. Scanning is free; cleaning requires OptiClear Pro.

View on the Mac App Store How OptiClear works

Frequently asked questions

Why is .Spotlight-V100 so large?
It grows with use and macOS puts no ceiling on it. 1 GB – 20 GB is normal on a Mac that has been in service a while — the detail guide breaks down what fills it.
Is it safe to delete .Spotlight-V100?
Yes, but use the command above. Deleting the folder by hand while the service is running can leave a broken state that has to be rebuilt anyway.

Related cleanup guides