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.

• What Is Taking So Much Space In My Mac Library To Go
• What Is Taking So Much Space In My Mac Library To Computer

Jul 31, 2016 This could take up tens of gigabytes of space if you have a lot of emails. On a Mac with a large hard drive, this isn’t a big deal. But, on a MacBook with 128 GB of solid-state drive space, this can be a significant waste of space. Check How Much Space Mail is Using. RELATED: 10 Ways To Free Up Disk Space on Your Mac Hard Drive. Oct 07, 2019  Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon, which you can double-click to download the original file. Learn more about this feature. Jan 15, 2015  Hi, I know you posted this a couple of months ago but I’m desperately trying to find out what is taking up so much space on my Mac. I currently have about 9 GB free – I just looked for the app you mentioned (Tidy Up) but can’t see it, just wondered if.

1. May 14, 2016  Unlike messy apartments, which exhibit tell-tale signs of piles of clothes and stacks of junk mail, it can be harder to tell exactly what is taking up so much space on your iPhone.Luckily, there.
2. Jan 12, 2018  I have an iphone5 and my photos and camera are taking up 1.7GB of space. I have deleted shared streams from my phone and both the photo stream and shared stream features have been turned off. All photos have been downloaded to iPhoto on my computer so there are no photos in my phone right now. Why is it taking 1.7GB from my phone's space?
3. Why is iCloud storage occupying space on my hard drive? The reason I was confused is that I’ve spent so much time writing about and testing this stuff. Mac 911 cannot reply to email with.
4. Dec 12, 2018 Why Is My Mac System Storage So Big? (MacMost #1808) macmostvideo. System Library folder, and user Library folders. How To Figure Out What Is Taking Up Space On Your Mac (MacMost #1958.

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?

What Is Taking So Much Space In My Mac Library To Go

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. 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!

Our resident Mac Help guru, Peter Cohen, previously told us about the 'Other' storage category on Mac computers and what it catalogs: In short, you're seeing space taken up by plug-ins, documents, and caches stored by OS X.

It's worth noting that these files aren't normally harmful or wasteful to your computer's system; most are intended to help your Mac run efficiently, and ideally, you shouldn't ever have to clear out your Other files. Unfortunately, they can quickly clog up a computer low on storage — especially if you're storing a large number of iPhone or iPad backups.

Whether you're looking to free up space on your hard drive or just want to do some spring cleaning, here are some simple steps to get your Mac free and clear.

A note on what happened to 'Other' space in macOS Sierra and higher

When Apple added its storage management feature to macOS Sierra, called Optimize Storage, it reorganized what 'other' storage is and where it's located on the Mac. Much of it has been divided out through other categories so it's easier to find and remove.

The 100GB of Other storage I used to carry on my iMac is whittled down to just 5GB. You can still clean out old and unnecessary content from your Mac with macOS Sierra and High Sierra by using Optimized Storage. It's just a little easier to find those unused files than it was before.

A lot of the features of Optimized Storage remove content from your Mac and store them in iCloud. If you're concerned with how much storage you're using up in iCloud, you can customize or disable some Optimized Storage features to keep a balance between what's on your Mac and what's in iCloud.

What's this 'Purgeable' category all about?

If you check your system storage graph in macOS, you'll probably discover a category called Purgeable. This is part of Apple's Optimized Storage service. When you move your Documents into iCloud (part of the Store in iCloud component) and your hard drive gets low on storage, only recently opened files are kept on your Mac. Older documents are stored in iCloud, while a shortcut icon is kept on your Mac (files are automatically re-downloaded to your Mac as soon as you open them). The Purgeable files are what Optimized Storage will move to iCloud and delete from your hard drive only if your hard drive starts to get full. Purgeable files also include caches and temporary files that used to fit into the Other category, which will also be deleted as your hard drive starts to fill up.

Though your Other storage might have been spread out across categories in macOS Sierra and higher, you can still follow the below steps to manually clean up your Mac and get rid of unnecessary files.

How to check your storage space on your Mac

If you are concerned with how much storage space you have remaining on your Mac computer, you can check its usage folder to see how much space each category is taking up, including Other.

1. Click on your desktop or the Finder icon from the Dock.
2. Select the Apple Menu icon in the upper left corner of the screen.

3. Click on About This Mac.

4. Select Storage.

Your Mac breaks down its storage categories as follows: Apps, Movies, Photos, Audio, Backups, and — that annoying, undescriptive category — Other.

How to remove cached files

Now that you know how much space your Other files are taking up, it's time to reduce their footprint on your Mac. You can start by removing items you don't need, including caches for your web browser, saved Apple Music streams, and photo previews.

A note on deleting cache folders: You only want to delete old and unnecessary files, as current cache files store your preferences. We strongly recommend only deleting cache files from old apps.

1. Click on your desktop or select the Finder icon from the Dock.
2. Select the Go menu in the upper left corner of the screen.

3. Click on Go to Folder.

4. Type ~/Library/caches into the text box. A list of caches from active apps will appear on your desktop.

5. Select the app folder you wish to remove the cache from.
6. Right-click (or control-click) on the app folder.

7. Select Move to Trash.

How to remove downloaded files

Chances are, your Downloads folder is stuffed with Other-type files, including installer packages, documents, and folders you have already made copies of somewhere else. If you want to make some room on your Mac, it may be time to clean out your Downloads folder.

1. Click on your desktop or select the Finder icon from the Dock.
2. Select the Go menu in the upper left corner of the screen.

3. Click on Downloads.

4. Select the file you wish to remove.
5. Right-click (or control-click) on the file.

6. Select Move to Trash.

If you want to save a file from the Downloads folder but don't want it clogging your drive, consider moving it to an external hard drive or flash drive, or uploading it to an online storage option like Dropbox.

How to delete old device backups in iTunes

If you tend to get new iOS devices fairly regularly, you may have unnecessary device backups stored on your computer via iTunes. Backups take up 4-5GB each, on average; there's no need to hold on to older device backups if you no longer have the device or have it stored in iCloud.

Third-party software that can help

While you don't need any third-party app to 'clean' your Mac, there are some very handy system access tools out there that make it easier to regularly remove unwanted files.

CleanMyMac 3

With CleanMyMac, you have easy access to a list of features that help you keep your Mac free of unnecessary junk. It scans your entire system and recommends files you should delete based on how old they are and whether they are considered unnecessary to your workflow. It's a lot like Apple's Optimized Storage, but with a few additional features. My favorite is the recommendation to delete all content related to an application. Sometimes, you'll end up with a couple of files left behind by an app when you delete it. CleanMyMac provides a one-button purge of everything associated with that app.

DaisyDisk

DaisyDisk scans your Mac and gives you a pie chart that makes it easy to see what files are using up the most space. You can identify files that are in the Other storage category and drag them to the delete box.

Onyx

Onyx is a robust Mac system access tool that, in-part, can delete caches, logs, temporary items, and other files that find their way into the Other storage category.

Cocktail

What Is Taking So Much Space In My Mac Library To Computer

Cocktail is another useful system access tool that you can use to clear caches, purge memory, and manage hidden Apple app settings, which might be automatically sending files into the Other category abyss.

Questions?

Still having trouble with Other? Let us know in the comments.

Updated June, 2018: Updated the section on deleting iPhone and iPad backups in iTunes to direct people to the article about doing that. The rest of these steps are still correct.

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