What Other space means on macOS
On macOS, storage breakdown in About This Mac > Storage shows categories like Apps, System, Documents, and Other. Other is a catch-all that can include system caches, disk images, local snapshots, installer packages, logs, and data tied to apps and users. Because it bundles many file types, its size can change after updates or heavy usage. Understanding what contributes to Other space is the first step toward clearing it safely without breaking apps or system functions.
Verify Other space size before cleanup
Confirm how much space is reported as Other and track changes over time. macOS storage estimates can shift due to cached content and background tasks. Use the Storage Management tool for consistent, comparable numbers. Avoid deleting system folders you do not understand, as this can cause instability. Focus on user-accessible caches, logs, and leftovers from apps and installers.
The macOS Storage Management tool
Storage Management provides categorized recommendations to free space. It flags large files, unused apps, and backups while showing app storage that may include cached data you can trim. Review options like review in Finder and reduce clutter carefully, and only follow through on actions you recognize or understand.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Category shown in Storage | Other (catch‑all for caches, snapshots, disk images) | macOS documentation |
| Where to check size | About This Mac > Storage | System UI |
| Tool for safe recommendations | Storage Management | System UI |
Identify large user caches and app leftovers
Much of Other space can be reduced by trimming caches and temporary files that apps keep. Many apps store caches in ~/Library/Caches and /Library/Caches, and logs in ~/Library/Logs and /Library/Logs. These are user-accessible locations you can review safely. Consider whether you need older logs or duplicated installer packages before removing them.
User-accessible cache locations to review
- ~/Library/Caches: per-user app caches
- /Library/Caches: systemwide and app caches
- ~/Library/Logs and /Library/Logs: application and system logs
- ~/Downloads: leftover installer files and archives
- ~/Library/Application Support: app data that may include archives
Use safe cleanup methods with verification
Empty Trash, clear caches selectively, and remove known disk images or installer packages. Restart cautiously only when necessary, and back up key data before major cleanup. If you need precise guidance on a specific app’s cache, consult that app’s documentation before deleting its files. Below are common, low‑risk cleanup actions that often reduce Other space.
Low‑risk cleanup checklist
- Empty Trash and securely empty it again if needed.
- Review ~/Downloads and /Downloads for old installers or archives and move or delete what you no longer need.
- In ~/Library/Caches and /Library/Caches, remove caches for apps you rarely use; skip system folders unless you’re confident.
- Check ~/Library/Application Support for large archives or leftover installer data and delete only what you recognize.
- Eject external disks and verify that no disk images remain mounted and consuming space.
Avoid risky deletions in system areas
Do not delete files inside /System, /usr, /private, or /bin, as these are core macOS components. Avoid ~/Library/Preferences and ~/Library/Containers unless you are certain which app owns the data. The system and some apps may rely on these items, and removing them can cause instability or require reinstallation to repair.
When to involve support or reinstall carefully
If Other space stays large after safe cleanup, consider whether system features like local snapshots are enabled and review their storage impact. For stubborn cases, contact Apple Support or use Apple Configurator only if you’re comfortable with advanced workflows. As a last resort, reinstall macOS using Apple-changed methods that preserve user data and apps while refreshing system components. This can reduce Other space caused by leftover system files.