System Data, explained honestly
MiniSpace does not promise to shrink System Data. Here is why, and what you can do instead.
Last updated: 10 November 2026. Applies to MiniSpace 0.2.1.
What the app says
This is the text on the System Data card inside MiniSpace:
Much of what macOS calls System Data is purgeable space and local Time Machine snapshots. macOS manages them itself and frees them when an app needs room. No cleaner can reliably reclaim that space, so MiniSpace does not pretend to. The numbers here are read-only.
What MiniSpace shows
The card shows the number of local Time Machine snapshots and your free space. Both are read-only. MiniSpace does not delete snapshots or purge anything from this card.
What you can act on instead
- The Free up space categories, such as build data, caches and old installers.
- Large folders in Disk scan.
- Duplicates.
- App leftovers in Apps.
No scare numbers
MiniSpace does not show an alarming System Data figure with a clean button next to it. It shows what it can read and tells you what it cannot change.