Remove Purgeable Space on Mac Mojave - Tricks to Free Up Internal & External Storage on Your macOS [Clear and Optimize Hard Drive]

Mastering macOS Mojave's Purgeable Space: A Comprehensive Guide

This guide explains what purgeable space is on macOS Mojave, how to check its size, and various methods to reclaim that space. We'll cover both manual techniques and the use of cleaning software for a quicker solution.

Understanding Purgeable Space

Purgeable space refers to temporary and non-essential files that macOS automatically deletes when disk space is low. These files often include cache data.

Checking Purgeable Space

Use Disk Utility to see how much purgeable space you have:

1. Open Spotlight Search (Command Spacebar).
2. Type "Disk Utility" and press Enter.
3. Select your main hard drive from the sidebar.
4. The "Available" section will show the purgeable space in brackets.

Removing Purgeable Space: Multiple Approaches

Several methods exist to free up purgeable space. The simplest is a restart, but more comprehensive techniques are detailed below:

1. Restart Your Mac: A simple restart clears temporary files generated by open applications.

1. Save your work.
2. Click the Apple logo (top-left).
3. Select "Restart."

2. Manage Time Machine Snapshots: Local Time Machine snapshots consume space. Consider disabling automatic backups or backing up to an external drive to reduce their impact.

1. Open Spotlight Search (Command Spacebar).
2. Type "System Preferences" and press Enter.
3. Go to Time Machine and uncheck "Back Up Automatically."

3. Empty the Trash: Delete unwanted files from the Trash to instantly free up space.

1. Click the Trash icon in the Dock.
2. Click "Empty Trash" and confirm.

4. Clear Cache and Temporary Files: Manually delete cache files to free up significant space.

1. Open Finder, press Shift Command G.
2. Paste ~/Library/Caches and click "Go."
3. Delete unnecessary cache files.

5. Optimize Storage: Use macOS's built-in Storage Optimizer to remove watched videos.

1. Click the Apple logo.
2. Select "About This Mac," then "Storage," then "Manage."
3. In the "Recommendations" tab, choose "Optimize" to delete videos.

6. Flush DNS Cache: Clear your DNS cache to free up a small amount of space.

1. Open Terminal (via Spotlight).
2. Paste sudo dscacheutil -flushcache;sudo killall -HUP mDNSResponder;say cache flushed and press Enter.

7. Disable iCloud Drive Optimization: Prevent iCloud Drive from storing local copies of files.

1. Click the Apple logo, then "System Preferences," then your Apple ID.
2. Uncheck "Optimize Mac Storage."

Using Cleaning Software (Recommended)

For a simpler solution, consider using cleaning software like MacKeeper's Safe Cleanup tool to automate the process.

1. Download and install MacKeeper.
2. Select "Safe Cleanup."
3. Choose the file types to delete.
4. Click "Clean Junk Files."

This comprehensive guide provides various methods to effectively manage purgeable space on your macOS Mojave system. Remember to always back up your important data before performing any major cleanup operations.

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