So, your Mac is running out of storage. You try to figure out what’s taking up your disk space by clicking the Apple logo on the top-left of the screen, selecting About This Mac, and hitting the Storage tab.
Ideally, you should always keep at least 10% of your Mac’s memory free. Otherwise, the device will start to run slow and won’t allow you to install new apps or download large files. When the computer runs out of memory, find out what clogs up its disk space and erase the unnecessary contents or relocate them to new storage. Find out how much storage is available on your Mac Choose Apple menu About This Mac, then click Storage. Each segment of the bar is an estimate of the storage space used by a category of files. Move your pointer over each segment for more detail.
To your surprise, you see a yellow bar representing “System” that seems to occupy way more space than you think it should. In the example above, it only shows 207 GB, but take a look at this Apple discussion — some Mac users report that System Storage takes an astonishing 250 GB.
Worse yet, you have no idea what’s included in “System” storage, because clicking the “Manage” button brings you to this System Information window… and the “System” row is greyed out.
Why does my Mac system require so much space?
What does it contain?
Is it safe to remove some of those system files?
How do I regain more storage space?
Questions like these may easily get to your head. Although my Mac now has a good amount of disk space available, I’m always wary of files that are taking up more space than they should.
I have no idea why “System” is greyed out while “Documents,” “System Junk,” “Trash,” etc. allow you to review the files based on size and type. My hunch is that Apple does this on purpose to prevent users from deleting system files that could lead to serious issues.
What Files Are Included in System Storage on Mac?
During my research, I found many people report that Apple counts iTunes backup files and app caches (e.g. Adobe video cache files) in the System category.
Since it’s greyed out and we are unable to click on that category for deeper analysis, we’ll have to use a third-party app to assist.
CleanMyMac X is perfect for this kind of analysis. Since I tested the app in our best Mac cleaner review, it immediately came to my head when I saw “System” was greyed out in Storage. Note that CleanMyMac isn’t freeware, but the new “Space Lens” feature is free to use and it allows you to scan your Macintosh HD, and then show you an in-depth overview of what’s taking up disk space on your Mac.
Step 1:Download CleanMyMac and install the app on your Mac. Open it, under “Space Lens” module, first click the yellow “Grant Access” button to allow the app to access your Mac files and then select “Scan” to get started.
Step 2: Soon it’ll show you a folder/file tree and you can hover your cursor over each block (i.e. a folder). There you can find more details. In this case, I clicked “System” folder to continue.
Step 3: The file breakdown below indicates that some Library and iOS Support files are the culprits.
The interesting part is that the System file size shown in CleanMyMac is much smaller than the size shown in System Information. This puzzles me and makes me believe that Apple definitely has counted some other files (not real system files) in the System category.
What are they? I have no clue, honestly. But as reported by other Mac users who experienced the same issue, they said Apple also considers app caches and iTunes backup files as System files.
Out of curiosity, I ran CleanMyMac again for a quick scan. That app found 13.92 GB in iTunes Junk. Further review revealed that the junk files are old iOS device backups, software updates, broken downloads, etc.
But even after adding this amount to the original system files returned by CleanMyMac X, the total size is still a bit less than what’s returned in System Information.
If cleaning the System Storage is still not enough to bring your Mac available disk space to a normal level (i.e. 20% or more), see below.
What Else Can I Do to Reclaim More Disk Space?
There are tons of ways out there. Here are a few of my favorites that should help you get back a decent amount of space quickly.
1. Sort all files by size and delete old large files.
Open Finder, go to Recents and look at the Size column. Click on it to sort all recent files by file size (from large to small). You’ll have a clear overview of what items are eating up a large amount of space, e.g. From 1 GB to 10 GB, and from 100 MB to 1 GB.
On my MacBook Pro, I found a few large videos that could be transferred to an external drive.
Note: If the Size column doesn’t show up, click on the Settings icon and select Arrange By > Size.
2. Remove duplicate files.
Don’t forget those duplicates and similar files! They can stack up without you being aware of it. Finding them is sometimes time-consuming. That’s what Gemini 2 is designed for. Simply select a few frequently used folders (e.g. Documents, Downloads, etc.) in the main zone of Gemini.
It then scans them and returns all the duplicate files that might be worth removing. Of course, it’s always a good practice to review them before doing so. You can also read more from our detailed Gemini review here.
Wrapping It Up
Ever since Apple introduced the Optimized Storage feature, Mac users got the option of saving space by storing content in the cloud. How to get microsoft programs on mac. Apple also has several new tools that make it easy to find and remove unneeded files.
That bar under the Storage tab is beautiful. It does allow you to get a quick overview of what’s taking up the most space on our hard drive. However, it still lacks insights into the “System” category as it’s greyed out.
Hopefully, the guides above have helped you figure out the reasons you’ve got so much “System” data, and most importantly you’ve reclaimed some disk space — especially for new MacBooks pre-installed with flash storage — every gigabyte is precious!
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Sometimes, you need to know how much storage space in on your Mac. Apple doesn’t make this info readily available because not many of us need to know about Mac storage often enough. It’s really easy to check, though – and there are even some alternatives that give you better options for managing your on-board memory!
People need to check their storage space for a variety of reasons. Sometimes it’s just good device management; sometimes your computer is running slowly, and storage is the first culprit you think of. Ideally, about ten percent of the storage space on your Mac should be free at all times so your computer can run smoothly.
Depending on which model you have, this can be tricky to accomplish routinely. Maybe you need to delete some older apps you’re not using, or the app isn’t supported anymore. Maybe you’re just holding onto old documents you no longer need.
Whatever your use-case, here’s how to check disk space on Mac.
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How To Find Out What's Taking Up Space On Mac
How To Check Storage on Mac
It’s actually really simple to check your device’s memory! Here’s how:
- On the menu bar, click the Apple logo in the top left
- Select ‘About this Mac’
- Select ‘Storage’
This is the easiest method for how to see storage on Mac – but you can go deeper! If you need a closer look at your Mac’s memory use, there are a few ways to go about it.
From the Storage screen, you can select ‘Manage,’ which takes you to a new window. Applications, Documents, Photos, and other sections can be found on the left of this window, and a detailed view of those files on the right.
You can also use Finder! To do so, Open Finder, go to the View menu item in the menu bar, and select ‘Show toolbar.’ You’ll see a new bar at the bottom of the Finder window showing the number if items for the section you have selected on the left-hand pane and the total amount of storage your Mac has available.
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Disk Utility is another resource. Open Disk Utility, and it will launch into a view of the volume(s) on your Mac, which also shows how much space is used, and how much is free. (Keep in mind Disk Utility is meant for power users who want to manage their storage, and is a bit of overkill for most users.)
How To Manage Storage in macOS
There are also easy ways to manage the files or applications taking up room on your Mac.
In Finder, select the category from the left side pane, then the application or file you want to delete. Right-click on that file or app, select ‘delete,’ and it’ll be removed. From the System Information menu, simply select the file or app you want to get rid of, and select the ‘delete’ button on the bottom right of the window.
But these two methods often doesn’t solve the issue! One clever way to better manage the storage on your Mac is to use cloud storage options like iCloud, Dropbox, Google Drive, and OneDrive. Apple’s iCloud is woven into your AppleID, and using it is a very straightforward approach; it’s automatically added to the storage options for your Mac!
How To Find Out What's Taking Up Space On Mac
But iCloud is not the only solution for cloud storage on Mac. If you have something else, CloudMounter is the easiest and best way to manage all your cloud storage containers. It lives in your menu bar for easy access, and shows all your cloud storage options in Finder. It helps your Mac treat cloud storage as a local disk, making access and managing files really simple!
Best of all, CloudMounter uses 256-bit encryption, so your documents are always safe.
If all the menus and file size jargon of Apple’s Finder and System Information options is confusing, we’ve got a great solution for you. iStat Menus is a handy app that also lives in the Menu Bar, and gives a graphical overview of CPU and GPU use in real-time, network connections, and memory use. Instead of dipping and diving through Apple’s hierarchal menus, you can just click on iStat Menus to get the same information in a much better interface!
iStat Menus also allows you to keep the data surfaced directly on your menu bar. Instead of clicking the icon, you can choose to have things like CPU or memory usage as icons so the information is always available in real-time. Awesome!
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Probably the best (and definitely the most powerful) option for managing your Mac’s memory is CleanMyMacX. Like iStat Menus, it has a drop-down window from the menu bar showing details like CPU or memory use, as well as which apps may be kicking your Mac into overdrive.
CleanMyMacX really shines when you open it up. The app scans your system and identifies unused files, random system junk, mail attachments – and also manages your trash bins. It scans for malware, checks for privacy leaks, optimizes your system for speedy performance, and does routine maintenance.
That’s a lot, but we’re not done! An option within CleanMyMacX named ‘Space Lens’ is a lot like Apple’s Finder, only better looking and much easier to use. Here you’ll see all your applications and files divided into sections, and broken into sub-menus. You can also manually delete apps or files.
‘Large & Old Files’ is a feature in CleanMyMacX which – you guessed it – finds large files and files you haven’t touched in a long time. The goal is to help you identify which files might be worth deleting, or at least shuffling off to cloud storage. It even tells you how long its been since you used a file!
But let’s be honest: most of the space on your Mac is probably taken up by apps. And chances are, you don’t want or need most of those apps anyway. This is where CleanMyMacX shines bright! Under the ‘Applications’ menu, you can update and manage apps and extensions with ease.
The ‘Uninstaller’ option is a lot like the ‘Large & Old Files’ option, just for apps. It shows you which apps are old, which may be abandoned (32-bit apps are no longer supported on Mac!), and which are just plain unused. It even shows you how large the apps are, letting you do the quick math on which will free up the most space when deleted.
To get rid of apps or files, simply select them from the CleanMyMacX menu, and select the ‘Uninstall’ or ‘Delete’ option at the bottom of the window. It’s that easy!
Keep your Mac in top shape
Checking and managing the storage on your Mac is simple. While viewing your Mac’s storage is easy to do without having a separate app, there are good reasons to have something beyond Apple’s own options to manage your Mac’s memory.
Apps often have files and folders embedded deep in your Mac’s memory, which don’t always go away when you simply delete the app from Apple’s menus. Sure, you got rid of the main offender, but many apps (like those from Adobe) have nuisance files that linger long after you delete the app.
Similarly, moving an app to the trash bin doesn’t actually delete it. The ‘Trash’ app is little more than a place you put apps you don’t want; it doesn’t delete them. You have to manage your trash bin separately, which can balloon out of control.
CleanMyMacX is a great bet for handling it all. It’s smarter at deleting files, folders, and apps, and gives you a much better view of what may be occupying your Mac’s storage. It also removes associated files for apps you delete.
There’s no silver-bullet solution, though! We also like CloudMounter for those with multiple cloud storage solutions, and iStat Menus is really sharp at surfacing the right data when you need it. Best of all, all three options are available for free as part of a seven day free trial for Setapp, along with dozens of other great apps.
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