How to fix “Disk full” on Mac

Complete guide with multiple methods and troubleshooting.

7-10 min read
Expert Verified
Last Updated: August 2025

Quick Answer

To fix the 'Disk full' error on a Mac, users can free up space by deleting unnecessary files, utilizing built-in storage management tools, or transferring files to external storage. Regular maintenance is key to preventing this issue.

Easy⏱ 7-10 min read

Prerequisites & Requirements

Before attempting to fix the 'Disk full' error, ensure you meet the following requirements.
  • •macOS version: Ensure you are running macOS Sierra (10.12) or later for optimal tools.
  • •Administrator access: You may need admin privileges to delete certain files.
  • •Backup software: Consider using Time Machine or another backup solution to protect your data.
  • •Sufficient external storage: If transferring files, have an external drive ready.

Method 1: Using Storage Management

This method is ideal for users who want to quickly identify and remove large files or applications consuming disk space.
  • •Step 1: Click on the Apple menu in the top left corner of your screen and select 'About This Mac'.
  • •Step 2: Navigate to the 'Storage' tab and click on 'Manage'. This will open the Storage Management window.
  • •Step 3: Review the categories listed (Applications, Documents, iCloud Drive, etc.) and select each to see detailed usage.
  • •Step 4: To delete files, select a category, choose the file, and click the 'Delete' button. Confirm the deletion.
  • •Step 5: Verify the available storage by returning to the 'Storage' tab.

For macOS Ventura (13) and later

In macOS Ventura and later, the interface may have slight changes.
  • •Step 1: Access the Apple menu and select 'System Settings'.
  • •Step 2: Click on 'General', then 'Storage' to view storage details.
  • •Step 3: Use the 'Recommendations' section for suggestions on optimizing storage.

For macOS Monterey (12) and earlier

The steps remain largely the same, but the interface may differ slightly.
  • •Step 1: Click on the Apple menu and select 'About This Mac'.
  • •Step 2: Go to the 'Storage' tab and click 'Manage'.
  • •Step 3: Review and delete files as necessary.

Method 2: Using Finder to Manually Delete Files

This method is useful for users who prefer to manually manage their files and folders.
  • •Step 1: Open Finder by clicking on the Finder icon in the Dock.
  • •Step 2: In the Finder sidebar, select 'Documents', 'Downloads', or any other folder where large files may reside.
  • •Step 3: Sort files by size by clicking on the 'Size' column header. This will help you identify large files quickly.
  • •Step 4: Select files you no longer need, right-click, and choose 'Move to Trash'.
  • •Step 5: Empty the Trash by right-clicking on the Trash icon in the Dock and selecting 'Empty Trash'.

Troubleshooting Common Issues

If you encounter issues while trying to free up disk space, consider the following solutions.
  • •Error: 'The operation can’t be completed because the item is in use' - Solution: Close any applications using the file and try again.
  • •Issue: 'Insufficient permissions' - Fix: Ensure you are logged in as an administrator or check file permissions by right-clicking the file and selecting 'Get Info'.
  • •Problem: 'Disk space not freeing up' - Workaround: Restart your Mac after deleting files to refresh the system.

Advanced Tips & Shortcuts

For power users, here are some additional tips to manage disk space more efficiently.
  • •Keyboard shortcut: Command + Space - Opens Spotlight Search for quick file searches.
  • •Command line: Use 'du -sh *' in Terminal to see the size of directories in the current folder.
  • •Hidden feature: Use 'Finder > Go > Go to Folder...' (Command + Shift + G) to access hidden directories.

Common Mistakes to Avoid

Avoid these common pitfalls:

Expert Tips

Regularly monitor your disk usage to prevent the 'Disk full' error from occurring.