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How to Fix "Your Startup Disk Is Almost Full" on Mac

Running out of space on your Mac’s startup disk? Learn effective tips from Qureasy to free up storage and keep your Mac running smoothly and fast.

1. Empty Trash Automatically

  • Go to Finder > Settings > Advanced
  • Check "Remove items from Trash after 30 days"
Why? Deletes forgotten trash permanently.

2. Delete Large & Old Files

  • Click  > About This Mac > Storage > Manage
  • Use Recommendations to remove:
  • System junk
  • iOS backups
  • Large attachments
Why? macOS identifies biggest space-wasters.

3. Clear Cache Files

  • Open Finder > Go > Go to Folder (⌘+Shift+G)
  • Type ~/Library/Caches > Delete contents (not folders)
Why? Apps store GBs of temporary cache data.

4. Optimize Storage

  • Enable Store in iCloud (Desktop/Documents files)
  • Turn on Empty Trash Automatically
Why? Offloads files while keeping access.

5. Remove System Logs

  • In Go to Folder, type: /private/var/log/ ~/Library/Logs/
  • Delete older log files
Why? Logs accumulate over time.

6. Uninstall Unused Apps

  • Use AppCleaner (free) to delete apps completely
Why? Leaves no residual files.

Advanced Space-Saving Methods

Prevent Future Warnings

  • ✔ Monitor Storage: Check  > About This Mac monthly
  • ✔ Use External Drives: Store media/files on USB drives
  • ✔ Cloud Services: Utilize iCloud Drive/Google Drive
  • ✔ Regular Maintenance: Clean cache every 3 months
Pro Tip: For persistent issues, consider upgrading your Mac's SSD or using storage management apps like CleanMyMac X.

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