In fact, your Mac stores a lot of information in files called caches, allowing the fast access to that data and reducing the need to get it from the original source again. Cleaner One Pro is your all-in-one disk cleaning manager. You can visualize, manage and free up your storage space in just a few clicks. Starting with a Smart Scan for your Mac, you can also take advantage of the Big Files detector, Duplicate Files and Similar Photos finder to delete all the useless junk files and free up more space. Luckily, some tools can provide a disk scan and can save up lots of space on your Mac. Apps notarized by Apple are best for this job. CleanMyMac X, the app I talked about earlier, has a Large & Old Files feature, which finds and removes massive files stored on your Mac.

Some days ago, I found one Reddit user’s post telling the “System” taking up a huge space on Mac. It was the first time I met the Mac “System” storage problem. And it was described as follow:

Hi Mac Users, System is taking an incredibly large amount of space. I mistakenly loaded heavy video files to Numbers and the hard disk immediately filled up. Any help accorded will be highly appreciated.

After I checked my computer storage usage and I was surprised to find my “System” is also taking an incredibly huge space – 43GB of the total 120GB on my MacBook Air.

As well known, the Mac operating system usually takes up from 8GB to 13GB. So I don’t think my Mac “System” storage could be that huge, so I searched to find how it defines “System” storage for a Mac, and how to free up that storage.

What is in the Mac “System” Storage?

The “System” on your Mac storage bar stands for that space your macOS operating system used, including the system itself and the caches and cookies it generated while driving on your computer hard drive.

Sometimes, your Mac may mistakenly put other sections into the “System” storage. For instance, my mac made the mistake of failing to exclude the “Music creations” and “iOS files” (iOS backups) from the “System” storage, so that I get a huge “System” on the storage bar.

Cleaning Up Mac Storage

And after I clicked the Manage.. button on the top left of the bar, it showed the real system storage was taking only 29.3 GB. And there were two new categories named “iOS files” and “Music creations” being separated.

And the sum of the storage size of these three parts (System, Music Creation, and iOS Files) is 43.38GB, equal to the size of the huge System storage I showed before on the storage bar.

4 Tips to Quickly Clean Storage on Your Mac

On the storage manager page, you’ll have a detailed view of all data types with the size it used. And you can choose any large category to have a clean. And below are some usual and free methods to free up your Mac storage.

Clear Up Space On Macbook

1. Delete useless iOS backup files, applications, and documents.
2. Transfer media files like photos, video, music, and iBooks to external disk drive or cloud. And then delete them.
3. Empty your Trash bin get more free space.
4. Remove your iPhone or iPad software updates on your Mac.

Clean Up Free Space Macbook

Most of these methods aim to remove the larger files on your Mac to quickly free up your Mac storage. And if there is any question, please leave your comment below.