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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.
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 33.87 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 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.
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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 DaisyDisk, 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. How to download videos from youtube on mac air.
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. Dmg file opener for mac.
In 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. Run CleanMyMac.
If you are not a power Mac user, another way to help you quickly locate unnecessary files is using CleanMyMac, an app that won our award for the best Mac cleaner software. As you can also see in my detailed review here, I believe CleanMyMac is a must-have app for all basic users.
3. Remove duplicate files with Gemini 2.
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.
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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 our Gemini review here.
Wrapping It Up
Ever since Apple introduced the Optimized Storage feature on macOS Sierra and High Sierra, users got the option of saving space by storing content in the cloud. Apple also has several new tools that make it easy to find and remove unneeded files.
Facebook download video to computer. 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 on 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 (usually 128 GB or 256 GB) — the storage is so precious!
You have probably already discovered that your mac strongly needs a cleanup. Most working processes are not as efficient as they used to be, and the speed of operation truly outwears your patience. The best way to cope with the situation is to choose a trusted cleaning software that can scan the system, delete dozens of unnecessary files and make your mac work smoothly.
There is currently a wide choice of many different mac cleaners in the market and it is not too easy to decide which one must be given a preference. Our tips will help you to understand what steps to perform in selecting a mac os cleaner and what features the best cleaner for mac must necessarily possess.
How to determine the best mac cleaner?
It often happens that when making a mac cleaner choice, users overlook definite aspects that might be of a key importance for their further work. The following recommendations will be very useful for all who want to choose the best mac cleaner among the available services:
What to expect from a good cleaner for mac?
To answer this question, we have prepared the list of the most valued possibilities of a good mac cleaner: https://icever118.weebly.com/blog/free-extention-cleaner-for-mac.
Recommending the best mac cleaner software
Surprised at the opportunities a mac cleaning software might have? By all means, you shouldn`t be. Your mac deserves the best care and the smartest decisions.
One of the most advanced solutions in the market is CleanMyMac 3. It is the third version of a popular safe mac cleaner designed by MacPaw, a leading company in developing high-quality Ma applications. The previous versions of the cleaning utility have gained the user`s recognition and became frequently used in both private and business sector.
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The third version of CleanMyMac is significantly improved in comparison with the previous ones and its new opportunities are relevant to market`s major expectations. Among the introductions that were made in CleanMyMac 3, there are the following: the possibility of mail attachments and iTunes cleanup, better privacy, advanced system monitoring, and some small details and improvements. As for the first introduction, it is definitely an important one, because mail attachments that are copied on mac take too much space and still are not generally needed. Privacy matters include the cleaning of the digital history and full destroying of the sensitive data that is no more required. In CleanMyMac 3 there appear some convenient updates that help users to maintain their mac health, such as a scheduler that reminds of performing regular cleanings.
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In general, the third version is valued for its attention to details and self-sufficient character when it comes to monitoring a mac health. Due to the described characteristics, CleanMyMac 3 has got the competitive place in the market and a good reputation among users. This cleaner is definitely worth your consideration if you are looking for a solution that will make your mac healthy and fast once and forever.
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