How to Fix "Not Enough Space to Install macOS Golden Gate"

You check your Mac and see 15GB of free storage. Then you start installing macOS Golden Gate, only to get a message saying there isn't enough free space and that you need additional storage.

If you're wondering why your Mac still says there's not enough room when you clearly have several gigabytes available, you're not alone. macOS needs extra working space during a major system upgrade, not just enough room for the installer.

Why Does macOS Golden Gate Say There Isn't Enough Space?

The free space shown in System Settings > General > Storage isn't necessarily the amount of space macOS can use to complete the installation.

When you install macOS Golden Gate, your Mac needs additional space to prepare the installer, unpack files, create temporary installation data, and complete the upgrade. Because of this, you may see a “not enough free space” message even when your Mac still has 10GB, 15GB, or more available.

The installer may also tell you exactly how much additional storage you need. For example, you might see a message like:

“Your disk does not have enough free space. Updating requires XX.XX GB of disk space.”

The exact wording and storage requirement can vary depending on your Mac and how you're installing Golden Gate.

How Much Space Do You Need to Install macOS Golden Gate?

Don't judge the storage requirement by the size of the Golden Gate installer alone. The installation process needs additional temporary space, so having only slightly more free space than the installer size may still result in an error.

For a smoother upgrade, it's best to have at least 35GB of free storage before installing macOS Golden Gate.

If your Mac currently has only 10GB or 15GB free, it's a good idea to clear some space first rather than starting the installation and finding out that you need even more storage.

How to Clear Space for macOS Golden Gate

Use BuhoCleaner to Free Up Space Quickly

If you don't want to search through your Mac folder by folder, BuhoCleaner can help you find unnecessary files and free up storage in a few minutes.

Here's a quick way to use it:

1. Open BuhoCleaner and run Flash Clean.
2. Check Large Files if you still need more space.
3. Navigate to App Uninstall to remove apps you no longer use.

Check your available storage again in System Settings > General > Storage. Once you've freed up enough space, you can try installing macOS Golden Gate again.

Delete Large Files You Don't Need

You can also free up space using the tools already built into macOS.

Go to Apple menu > System Settings > General > Storage and check which categories are using the most space.

Start with your personal files, especially:

• Large videos and photos
• Files in Downloads
• Old ZIP files and disk images
• Large documents and project files
• Old macOS installers

If you find something you no longer need, delete it and empty the Trash. Otherwise, the storage may not actually be reclaimed.

If you have important files you don't want to delete permanently, move them to an external drive or cloud storage instead.

Uninstall Unused Apps

Large apps can take up several gigabytes, especially games, video editors, creative tools, and apps you installed for testing.

The easiest way to find them is through macOS Storage:

1. Go to Apple menu > System Settings > General > Storage.
2. Click the information icon next to Applications and wait for macOS to load the list.
3. Sort the apps by size and look for large apps you no longer use.
4. Select an app and click Delete to remove it.
5. Empty the Trash to make sure the storage is actually released.

If you only need to free up a few gigabytes for the Golden Gate installation, removing one or two large apps you no longer need may be enough.

Remove Old iPhone and iPad Backups

If you've backed up your iPhone or iPad to your Mac before, those local backups can take up several gigabytes of storage. You don't need to connect your device to remove an old backup.

1. Open Finder and click Go > Go to Folder from the menu bar.

2. Enter the following path and press Return:

   ~/Library/Application Support/MobileSync/Backup/

3. You'll see one or more folders with long, random-looking names. These are your local iPhone and iPad backups.

4. Check the folders by size and Date Modified. If you have multiple old backups and know you no longer need one, move that backup folder to the Trash.

5. Empty the Trash to permanently remove the backup and reclaim the storage.

Be careful when deleting these folders. If you're not sure which backup you need, don't remove it. Keep at least one recent backup if it's the only local copy of your iPhone or iPad data.

Afterward, go to System Settings > General > Storage and check how much free space you've recovered.

Conclusion

Running into a “not enough space” error when installing macOS Golden Gate is fairly common, and it's usually easy to fix by clearing some unnecessary files, apps, or old backups.

To avoid the same problem next time, check your available storage before installing a macOS update. Keeping some extra space free gives the installer more room to work and saves you from dealing with a storage warning halfway through the process.

You also don't have to wait until your Mac runs out of space to clean it up. Using BuhoCleaner regularly to remove junk, large files, and unused apps can help keep your Mac tidy and ready for the next update.