How to Fix "Not Enough Space to Install macOS Monterey" Error

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Robert Hunt

4 min read

Want to update your macOS to the latest macOS Monterey but find that there is not enough free space to install it? Don't worry. Here in this article, we'll show you how to resolve the problem quickly.

How to Fix "Not Enough Space to Install macOS Monterey" Error

Also Read: How to Install macOS Monterey

How Much Space Does macOS Monterey Take Up?

The macOS Monterey installer is around 12 GB in size. In addition, you will need at least 2G extra to ensure you successfully update to Monterey. So how do you know how much free disk space you have left? Please read on.

How to Check the Available Storage Space on Mac?

Before starting to explain to you how to solve the problem of insufficient space, let's take a look at how much free disk space you still have.

Check Stroage Space

  1. Click the Apple icon > About This Mac > the Storage Tab.
  2. After the calculation process is complete, hover your mouse over each part of the storage bar, you can see which types of files occupy most of the storage space and how much space is available.

5 Best Ways to Fix "Not Enough Space for macOS Monterey" Error

After checking the storage space, you know which parts are taking up a lot of storage space. Now what you need to do is clean them up. Here, we have listed the five best ways for you. Let's take a look.

1. Clean Your Mac with BuhoCleaner

BuhoCleaner is a handy Mac cleaner designed to help you free up storage space in a few clicks. With its Flash Clean feature, you can get rid of all junk files from your system, browser, and users in a matter of seconds. Besides, it comes with other utilities such as application uninstaller, large file finder, duplicate file finder, startup programs manager, and real-time macOS status monitor. What's more, BuhoCleaner performs well on macOS Monterey, which means you can always use it to keep your Mac from running out of storage space.

Clean Storage Space with BuhoCleaner

2. Delete Time Machine Backups

Your Mac will keep a copy of your Time Machine Snapshots in case your external drive can't be accessed. Here's how to remove the local Time Machine snapshots from your Mac manually.

  1. Open Spotlight Search, type in Terminal and click on the Terminal icon to open it.

  2. In the Terminal, type and run the command: tmutil listlocalsnapshots. (You should be able to see a list of backups sorted by date.)

    Find Time Machine Snapshots

  3. Type into the Terminal the command: tmutil deletelocalsnapshots "xxxxxxx," enter the administrator password if asked, and hit the Enter button on the keyboard. ("xxxxxxx" stands for the backup date of your Time Machine. )

  4. Repeat step 3 if you want to remove more than one Time Machine snapshot.

3. Uninstall Unused Apps

You may have installed a lot of applications on your Mac. Some of them may no longer be useful to you. You can delete them to claim back some valuable storage space.

How do you usually uninstall an application? Just drag it to the Trash? Actually, by doing so, the app is not completely removed from your Mac. To delete all its leftovers, you can go to the ~Library folder to check all the related files. Or, you can use BuhoCleaner to uninstall any program you don't use completely and effortlessly. Download it from here.

Uninstall Apps with BuhoCleaner

4. Delete Large Files

Large files are using up the most storage space. Just as you think, deleting them is a good way to free up space. If these files are important to you, you can move them to an external drive. If not, find and delete them directly.

There are two ways to find and delete large files: manually and automatically. The manual way is time-consuming and needs your patience. However, the automatic way is more efficient, and it's ideal for any level of Mac users. 

Refer to the article:How to Find and Delete Large Files on Mac for more detailed steps.

Find and Delete Large Files with BuhoCleaner

5. Optimize Storage with Built-in Tools

Mac has a set of built-in tools that enable you to optimize your storage in an automatic way. They do help you free up some storage space, but the result may not be as expected. You can still have a try.


  1. Click the Manage button above the storage bar to open the Storage Management window.
  2. On the window, you will find four optimization recommendations. 
  • Store in iCloud – store your photos, documents, files, videos, and more in iCloud.
  • Optimize Storage – macOS will delete iTunes movies and TV shows you watched to make sure you have free space to use.
  • Empty Trash Automatically – if you turn this function on, Apple will automatically remove the files that have been in Trash for over 30 days.
  • Reduce Clutter – you can manually move the files and documents that taking a huge disk space into Trash.


Now you know how to fix the problem of not having enough space to install macOS Monterey. Hope you can free up a lot of space for macOS Monterey.  Think this post is helpful? Don't forget to share it with your friends.


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