You won't be able to see exactly which files these are, as macOS will not allow DaisyDisk access to those files. However what if DaisyDisk also shows a large amount of disk space taken by 'Hidden Space'. Removing these will not harm your Mac's operating system and can be safely deleted, assuming you don't need the data of course. These include emails in your Outlook profile, Google Chrome browsing caches and Time Machine local backups. You may find that a lot of the data macOS is allocating to the 'System' category is in-fact data generated by the user, or applications that the user installed, not the system.
#MAC SYSTEM STORAGE HOG MAC#
The DaisyDisk application (available via the Mac App Store or from the developer's website) will allow you to drill down and find out exactly which files are using up how much space on your Mac. Presumably this is why all these kinds of advanced files are bunched into the 'System' category. This makes sense in a way as many Mac users wouldn't understand what these files are for, and it wouldn't be a good idea for them to start deleting data they don't know the purpose of. It isn't very useful when it comes to more advanced types of files, such as those used for caches, application support, backups etc. The built-in storage chart in macOS is similar to that of an iPhone, showing how much data is taken by apps (from the App Store), music (.mp3), movies (.mov) and documents (.pages). Unfortunately the System category is very broad and can include many different types of data, leading many Mac users to become perplexed as to why 100GB, 150GB or even 200GB of space on their computer is apparently being used by the 'System'. It even shows which categories of data are using the space, such as Apps, Music, Documents… And 'System'. In modern versions of macOS Apple includes a bar chart inside the 'About this Mac' menu which shows you how much space is used on your Mac's drive.
![mac system storage hog mac system storage hog](https://cdn.osxdaily.com/wp-content/uploads/2015/01/other-storage-mac-os-x.png)
Mac computer users can check how much disk space is available on their systems by clicking the Apple menu ( ) at the top left of the screen and selecting 'About this Mac', and then selecting the 'Storage. Computer storage or disk space is the amount of data (measured in 'bytes') that a drive is capable of holding.
![mac system storage hog mac system storage hog](https://imgix-blog.setapp.com/activity-monitor-memory-dark-macos11.png)
I have occasionally seen a Mac claim that all or almost all the files on a disk are 'system,' rather than properly breaking them down into 'application,' 'photo,' and so on.
![mac system storage hog mac system storage hog](https://www.maketecheasier.com/assets/uploads/2014/05/Reindex-Hard-Drive-System-Info-Tool.jpg)
However, you probably just use a single language on your Mac, so those language files are just using hundreds of megabytes of space for no good reason. You can switch your Mac's system language and start using the applications in that language immediately. Mac applications come with language files for every language they support.