Duplicate files · Removing and restoring duplicates
Why didn't my free space go up after removing duplicates?
Short answer: Usually because the copies went to your Mac's Trash (no drive set up), are being held on your Mac until your drive is reconnected, were clones that never used extra space, or are still referenced by macOS local snapshots for a while.
There are a few common reasons:
- No external drive set up — removed copies went to your Mac's Trash, which still uses space until you empty it.
- Drive set up but not connected — Storage Studio is holding the removed copies safely on your Mac and moves them to the drive when you reconnect it; the space frees then.
- Shared storage — some identical files were clones or links that never used extra space; those are shown separately and not removed.
- macOS snapshots — the system can keep deleted data in local snapshots for a while, so the change doesn't show straight away.
For more on space that doesn't come back, see freeing space.