6 Fixes for the Not Enough Space to Install macOS Monterey Error

Robert Hunt
Last updated: Mar 29, 2022

Summary: In this guide, we will show you 6 of the best ways to clear space for macOS Monterey.

Want to update your macOS to the latest macOS Monterey, only to find out there isn't enough free space on your Mac? Read on, and we will guide you through 6 different ways to free up space for macOS Monterey.

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

How Much Space Does macOS Monterey Need?

The macOS Monterey installer is about 12GB in size. But you'll still need some extra space to install it. According to Apple, if you're upgrading from macOS Sierra or higher, macOS Monterey requires 26GB of available storage to upgrade. And if you're upgrading from an earlier version, macOS Monterey requires up to 44GB of available storage.

How to Check the Available Storage Space on Mac

Now that you know the total amount of space needed to upgrade to macOS Monterey, the next thing you need to do is to check how much free disk space you have. Here are the steps:

Check Storage Space
  1. Click the Apple Menu > About This Mac > Storage.
  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 see how much space is available.

If you have more than 44GB of free space, then congratulations, you can go ahead and upgrade to macOS Monterey right now. But what if you don't have enough space? How can you make enough room for the installation of macOS Monterey? Read on for some solutions.

How to Free up Space on Mac for macOS Monterey

1. Optimize Storage with Built-in Tools

Macs with macOS Sierra or later have built-in optimization tools that will let you quickly optimize storage space.

  1. Click the Manage button above the storage bar to open the Storage Management window.
  2. You will see four optimization recommendations.
  3. Follow the recommendations to free up some space.
  • Store in iCloud – Click the Store in iCloud button to store your photos, documents, files, videos, and more in iCloud.
  • Optimize Storage – Turn it on, and the macOS will automatically delete iTunes movies and TV shows that you have already watched.
  • Empty Trash Automatically – If you turn this function on, the system will automatically remove files that have been in the Trash for over 30 days.
  • Reduce Clutter – Click the Review Files button and manually dump unneeded bulky or duplicate files and documents into Trash.

In addition to the 4 optimization suggestions, you may also notice a category labeled "Other". It takes up a lot of your storage space, but you can't open it. Wondering what it is and how to get rid of it? Take a look at this article: How to Delete Mac Other Storage.

2. Clear Junk Files in One Click

If you still haven't freed up enough space to install macOS Monterey, then you can use a Mac cleaner to quickly scan and clean up your Mac.

BuhoCleaner is one of the best Mac cleaning software, and it also works perfectly on macOS Monterey. Designed to be powerful yet easy to use, this tool allows you to clean and optimize your Mac like a pro. With its Flash Clean feature, you can get rid of all the junk files from your system, browser, and users in a matter of seconds.

DownloadFor macOS 10.10 and above
100,000+ Satisfied Users Worldwide
  1. Just download and install it on your Mac.
  2. Launch it and click the Scan button.
  3. Wait a few seconds, and you will see all the junk files on your Mac.
  4. Check the boxes next to the files you want to delete and click the Remove button. It's that easy!
Quickly Clean Up Mac with BuhoCleaner

3. Uninstall Apps You Don't Use

You probably have installed a great number of applications on your Mac. Some of them may no longer be of any use. Deleting them will help you claim back some valuable storage space.

But how do you usually uninstall an app? Did you know the application is STILL on your hard drive! To completely delete it, you still need to remove its related files and empty them to the Trash. Here’s what you need to do:

  1. Click the Go menu in Finder and choose Library.
  2. Find the files associated with the application and move them to the Trash.
    Delete App Related Files on Mac
  3. Empty the Trash

A simpler approach is to use the BuhoCleaner (mentioned above) to completely uninstall any program you don't use.Try the app for free now.

4. Delete Large and Duplicate Files

Large files and duplicate files are eating up a ton of your storage space. Finding them and deleting them is a great way to free up some space. You can remove them manually, but it will take you a whole lot of time. Thanks to a third-party tool like BuhoCleaner, now you can get rid of these storage-consuming files quickly and effortlessly.

  1. Download the trial version of BuhoCleaner.
  2. Install and launch it.
  3. To delete large files, select the Large Files option in the sidebar and click the Scan button.
    Delete Large Files on Mac with BuhoCleaner
  4. To delete duplicate files, switch to the Duplicates option, click the + button, and choose the folders you want to scan.
    Remove Duplicate Files with BuhoCleaner
  5. Remove the results you don't need.

5. Delete Time Machine Backups

Your Mac will keep a copy of your Time Machine Snapshots in case your external drive can't be accessed. However, having them there will take up some of your valuable storage space. If you are absolutely sure that they are no longer needed, delete them from your Mac to reclaim space.

Here are the steps:

  1. Open Terminal via Spotlight or Launchpad.

  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 the command: tmutil deletelocalsnapshots "xxxxxxx" , enter the administrator password if asked, and hit the Return 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.

6. Remove Old iOS Backups

Those old iOS backups are no longer of any use. Deleting them will help you reclaim some space.

Here's how to remove them from your Mac:

  1. Open Finder.
  2. Click your device in the sidebar.
  3. Under the General tab, click the Manage Backups button to see the backups on your Mac.
  4. Right-click on the backup that you don't want and select Delete or Archive.
  5. Click Delete Backup, then confirm your deletion.
Remove Old iOS Backups in Finder


Hopefully by now, we have helped you to resolve your problem of not having enough space for the installation of macOS Monterey. As you have seen, using a third-party tool can streamline the task and help you to achieve the desired result quickly and efficiently.

And BuhoCleaner is the handy Mac cleaner that can help you to do just that. You can free up gigabytes of space with just one click! Why not go ahead and give it a try.

Robert Hunt

I'm Robert Hunt, a tech-savvy fan with the love of all things Apple. As a hobbyist of gardening and meditation, I'm also a seasoned writer covering a wide array of Apple products, like iPhone, iPad, iOS and more.