Your Mac’s "Other" storage category is a black box—an ever-growing dumping ground for system junk, app remnants, and forgotten files that silently eat up gigabytes. Unlike Applications or Documents, this category lacks transparency, leaving users to guess which files are safe to delete. The frustration compounds when how to clean up other storage on Mac becomes a vague, trial-and-error process, often leading to accidental data loss or system instability. The problem isn’t just the space; it’s the uncertainty. Without a clear method, users risk deleting critical files, triggering app crashes, or even bricking their macOS updates.
The "Other" storage label is macOS’s way of grouping miscellaneous files—logs, caches, language packs, and system backups—that don’t fit neatly into other categories. Over time, this category can balloon to 20GB, 50GB, or even 100GB, yet Apple provides no direct way to clean it. The irony? Most of these files are non-essential, but identifying them requires digging into hidden folders and understanding macOS’s file hierarchy. The lack of a one-click solution forces users to either ignore the issue (and watch their storage dwindle) or resort to risky third-party tools that promise miracles but often deliver malware.
The solution lies in a mix of native macOS utilities, targeted manual cleanup, and strategic use of third-party apps—all while preserving system integrity. Unlike Windows, macOS doesn’t offer a built-in "Disk Cleanup" tool, but it does provide how to clean up other storage on Mac through Terminal commands, Storage Management, and selective file deletion. The key is methodical: start with safe, automated tools, then move to manual inspection of the most common culprits (like caches, logs, and old backups). The goal isn’t just to free up space but to do so without triggering performance hits or app failures.
The Complete Overview of How to Clean Up Other Storage on Mac
Cleaning up "Other" storage on a Mac isn’t about brute-force deletion—it’s about precision. The category itself is a catch-all for files that don’t belong in Applications, Music, or Photos, including system caches, temporary files, language resources, and even old iOS backups. Apple’s Storage Management tool (introduced in macOS Catalina) offers a starting point, but its suggestions are often too broad, lumping critical files with safe-to-delete junk. To clean up other storage on Mac effectively, users must combine built-in tools with manual scrutiny, focusing on high-impact areas like /private/var, /Library, and hidden system folders.
The process begins with identifying the composition of "Other" storage. Open About This Mac > Storage to see the breakdown—often, the largest contributors are System Data (macOS updates, caches) and User Data (app caches, logs, and backups). While some of these files are necessary for system operations, others—like old Safari caches or Time Machine local snapshots—can be safely removed. The challenge is distinguishing between the two without causing instability. Unlike Windows, macOS doesn’t provide a "safe mode" for cleanup, so every deletion must be weighed against potential risks.
Historical Background and Evolution
The concept of "Other" storage emerged with macOS High Sierra (2017), when Apple introduced a more granular storage breakdown in About This Mac. Before this, users relied on third-party tools like GrandPerspective or DaisyDisk to visualize disk usage, often uncovering hidden folders like /System/Library/Caches or /Users/[YourName]/Library/Caches. The shift to a categorized storage view was a response to growing user frustration with opaque disk usage, but it also created a new problem: the "Other" category became a dumping ground for files that Apple deemed too complex to categorize explicitly.
Over time, macOS’s handling of "Other" storage evolved alongside its system architecture. With the transition to Apple Silicon (M1/M2 chips), the category expanded further to include Rosetta 2 files (for running Intel apps) and virtualization layers (for running Linux or Windows via Parallels). Meanwhile, updates to macOS’s Storage Management tool added more granular controls, such as the ability to clean up other storage on Mac by targeting specific file types (e.g., removing old macOS installer files). However, the tool remains limited—it can’t delete system caches or user-level caches without manual intervention.
Core Mechanisms: How It Works
At its core, "Other" storage is a combination of two types of files: system-generated and user-generated. System files include caches for macOS updates, kernel logs, and temporary files stored in /private/var. User files typically reside in /Users/[YourName]/Library and include app caches, download remnants, and old backups. The key to cleaning up other storage on Mac lies in understanding which files are safe to delete. For example, clearing /Library/Caches can free up gigabytes, but deleting /Library/Preferences files may break app settings.
macOS’s Storage Management tool works by scanning the filesystem and categorizing files based on heuristics. It flags files like old macOS installers or unused language packs for deletion, but it stops short of touching caches or logs. To go deeper, users must use Terminal commands (e.g., sudo tmutil thinlocalsnapshots to remove Time Machine snapshots) or manually inspect folders like /private/var/folders, where temporary files accumulate. The risk? Deleting the wrong file can trigger app crashes or even require a reinstall of macOS.
Key Benefits and Crucial Impact
Freeing up "Other" storage isn’t just about gaining a few extra gigabytes—it’s about restoring performance, extending hardware lifespan, and avoiding unexpected slowdowns. A bloated "Other" category can lead to swap file overuse, where macOS relies on slow SSD space for virtual memory, causing lag during multitasking. Additionally, old caches and logs can fragment storage, degrading SSD endurance over time. The indirect benefits—like faster app launches and smoother system responsiveness—are often more valuable than the raw space recovered.
For users on older Macs (pre-2018) with HDDs, cleaning up "Other" storage can mean the difference between a usable system and one that’s constantly spinning. Even on modern SSDs, the impact is noticeable: a clean system boots faster, updates install without hitches, and background processes run more efficiently. The psychological benefit is equally important—knowing your storage is optimized reduces anxiety about running out of space unexpectedly.
"The 'Other' category is macOS’s way of hiding the mess it can’t categorize. But that mess is often the easiest to clean—if you know where to look."
—John Siracusa, Low End Mac
Major Advantages
- Performance Boost: Removing old caches and logs reduces I/O overhead, leading to faster app launches and smoother multitasking.
- Extended Hardware Life: SSDs degrade with excessive writes; cleaning up "Other" storage reduces unnecessary wear on flash memory.
- Prevents Unexpected Slowdowns: macOS relies on "Other" storage for swap files when RAM is full—clearing space here prevents performance drops.
- Future-Proofing: Regular cleanup ensures you’re not caught off guard by sudden storage alerts, especially on smaller SSDs (e.g., 256GB MacBooks).
- Data Integrity: Identifying and removing redundant backups or corrupted files reduces the risk of system instability.
Comparative Analysis
| Method | Effectiveness |
|---|---|
| macOS Storage Management | Moderate—clears obvious junk (old installers, unused languages) but misses caches and logs. |
| Manual Deletion (Terminal/Finder) | High—targets specific folders (e.g., /Library/Caches) but requires technical knowledge. |
| Third-Party Tools (e.g., CleanMyMac, DaisyDisk) | Very High—visualizes "Other" storage and suggests safe deletions, but some tools may overreach. |
| Time Machine Snapshots (Terminal) | High—removes local backups that can bloat "Other" storage without affecting actual Time Machine backups. |
Future Trends and Innovations
As macOS continues to evolve, Apple may introduce more granular controls for managing "Other" storage, possibly through a dedicated "Storage Settings" panel in System Preferences. Rumors suggest future updates could include a "Safe Cleanup" mode, similar to Windows’ built-in tool, which would automatically identify and remove non-essential files without risking system stability. Additionally, the rise of cloud storage (iCloud, Backblaze) could reduce reliance on local backups, shrinking the "Other" category over time.
On the hardware side, Apple’s shift to custom SSDs with advanced wear-leveling algorithms may reduce the impact of fragmented "Other" storage. However, users will still need to manage caches and logs manually, especially as apps become more data-hungry. The future of how to clean up other storage on Mac may lie in AI-driven tools that predict which files are safe to delete based on usage patterns—though such solutions would raise privacy concerns.
Conclusion
Cleaning up "Other" storage on a Mac is less about quick fixes and more about understanding macOS’s hidden file structure. The lack of a one-click solution forces users to become detectives, piecing together which files are safe to remove and which are critical. While third-party tools can simplify the process, the most effective method remains a combination of native utilities (Storage Management, Terminal) and manual inspection of high-risk folders. The payoff—faster performance, extended storage life, and fewer surprises—makes the effort worthwhile.
The key takeaway? Don’t ignore the "Other" category. Set aside time every few months to audit it, especially if you’re running low on space. Use the methods outlined here, start with the safest options, and gradually work your way to deeper cleaning. And remember: if in doubt, back up first. The goal isn’t just to clean up other storage on Mac—it’s to do so intelligently, ensuring your system remains fast, stable, and free of unnecessary clutter.
Comprehensive FAQs
Q: Is it safe to delete files from /Library/Caches?
A: Yes, but with caution. Caches are temporary files that apps use to speed up performance. Deleting them won’t harm your system, but some apps may take longer to load the first time after a cache clear. Focus on large files in this folder, as they’re the most likely to be stale.
Q: Why does "Other" storage keep growing even after cleanup?
A: macOS dynamically repopulates caches and logs. Additionally, apps like Safari, Chrome, and Mail constantly generate new temporary files. Regular maintenance (e.g., monthly cache clearing) is necessary to keep "Other" storage in check.
Q: Can I use a third-party tool like CleanMyMac to clean "Other" storage?
A: Yes, but proceed with caution. Tools like CleanMyMac or DaisyDisk can identify safe files to delete, but some aggressive cleaners may remove essential system files. Always review the list before confirming deletions and back up first.
Q: How do I remove old Time Machine local snapshots without affecting my actual backups?
A: Use Terminal with the command sudo tmutil thinlocalsnapshots / 9999999999999999. This removes local snapshots while preserving your Time Machine backups on an external drive. Replace the last number with a higher value (e.g., 1000000000000000) to remove more snapshots.
Q: Will cleaning "Other" storage speed up my Mac?
A: Indirectly, yes. Removing old caches and logs reduces I/O overhead, which can improve app launch times and system responsiveness. However, the biggest performance gains come from freeing up space for macOS to manage RAM and virtual memory efficiently.
Q: Are there any files in "Other" storage that I should never delete?
A: Yes. Avoid deleting files in /System/Library or /Library/Preferences, as these contain critical system and app configurations. Stick to /Library/Caches, /private/var/folders, and user-level cache folders for safe cleanup.
Q: How often should I clean up "Other" storage?
A: Aim for a monthly check, especially if your "Other" category is growing rapidly. If you’re on a smaller SSD (e.g., 256GB), consider bi-weekly maintenance to avoid running out of space unexpectedly.
Q: Can I use Spotlight to find large files in "Other" storage?
A: Partially. Spotlight can search for files by size, but it won’t categorize them by type. For a more visual approach, use tools like DaisyDisk or GrandPerspective to identify large, hidden files.
Q: What’s the difference between "Other" storage and "System Data"?
A: "Other" storage includes user-generated files (caches, logs, backups), while "System Data" refers to macOS’s own files (kernel caches, update remnants). Both can be cleaned, but "System Data" requires more caution, as deleting the wrong files may break macOS.
Q: Will cleaning "Other" storage help with a slow SSD?
A: Yes, but indirectly. A cluttered SSD with fragmented "Other" storage can lead to slower write speeds. Cleaning up space and optimizing storage layout (via sudo trimforce enable in Terminal) can improve performance, though a slow SSD may still need replacement if it’s physically degraded.
