My Apple MacBook running macOS had grown progressively sluggish over recent months. Opening the system diagnostic panels quickly confirmed my suspicion: the solid-state drive had nearly run out of space. Most baffling of all, the mysterious “Other” category had swollen to consume nearly 100 GB of capacity. On a laptop with finite storage, how many hundreds of gigabytes can anyone afford to squander?

Looking back, the biggest regret when purchasing this MacBook Pro was opting for the baseline 128GB SSD. Today, available disk space plummeted to a terrifying 80 MB. For countless Mac users, severely depleted storage headroom is the number one culprit behind sudden lag, application crashes, and thermal throttling.

Using macOS’s native “Storage Management” tool, I found that outside of necessary operating system binaries, applications, and personal documents, “Other” accounted for the overwhelming majority of consumed sectors.

What Exactly Is macOS “Other” Storage?

In macOS, “Other” is a catch-all designation for files that do not neatly fit into standard media categories (Apps, Music, Photos, Movies). Crucially, this bucket includes:

  1. System and Application Caches: Temporary files generated by web browsers, Xcode builds, and video editing preview caches.
  2. macOS Time Machine Local Snapshots: When Time Machine backup drives are disconnected, macOS retains local file change snapshots in /.MobileBackups or APFS snapshots.
  3. Application Support & Leftovers: Files residing in ~/Library/Application Support/ left behind by uninstalled software.
  4. iOS Device Backups: Complete local backups of iPhones and iPads created through iTunes or Finder.

How to Clean Up “Other” Storage Safely

  1. Delete Time Machine Local Snapshots via Terminal: Run the following command to inspect active local snapshots: 
    tmutil listlocalsnapshots /
    Thin local snapshots to release occupied blocks immediately: 
    tmutil thinlocalsnapshots / 10000000000 4
  2. Purge User Caches: Open Finder, press Command + Shift + G, enter ~/Library/Caches/, and clear out bloated cache folders belonging to legacy applications.
  3. Remove Stale iOS Device Backups: Navigate to ~/Library/Application Support/MobileSync/Backup/ and delete obsolete device archives.

After purging these accumulated files, over 65 GB of storage was successfully reclaimed, and macOS regained its snappy responsiveness.

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