Very large Library folder

[Passy78]

I have an "old" Mac Mini from 2013 where I noticed something unexplainable with the size of my library folder (in Users/myUser/Library). My SSD drive has a size of 250GB and it is quite full which is surprising as I moved the photo and music library to an external drive. My library folder is an incredible 142 GB, but when I look at the subfolders I can't explain this. The biggest subfolder Containers has 13 GB, Mobile Documents has 9 GB, Messages 4 GB but all other subfolders are a lot smaller. There is no way this adds up to 142 GB. I can only suppose there is a hidden folder which has junk of more than 100 GB but I can't find it.

How can I find this missing data ? What is happening here ?

 

[bogdanw]

~/Library/Caches? Use Calculate All Sizes in Library https://www.macrumors.com/how-to/view-folder-sizes-on-your-mac/ and Shift, Command (⌘), and period symbol (.) to show hidden files https://www.macrumors.com/how-to/show-hidden-files-on-a-mac/

 

[Fishrrman]

Download DiskWave from here:

DiskWave Homepage

It's small in size and free.

Open DiskWave and go to the preferences.
Put a checkmark in "show invisible files".
Close preferences.

The DiskWave window shows you all your drives in plain English (no ridiculous graphical formats).
Click on any drive, partition, folder.
Now, you'll see what's ON the drive, listed in order of "largest to smallest".
You can easily locate what's eating up your space.

What is it?

 

[maflynn]

Download and run OmniDiskSweeper (its free) It will provide a sorted list of your files/folders and show you where all your space is going. It includes system and hidden folders

I like how this app sorts the files

 

[Passy78]

Thanks everbody for your suggestions. I tried OmniDiskSweeper first. Problem is solved now, there was a large folder related to OneDrive (which I stopped using some time ago) in the library folder, only containing data I have long moved to an external drive. I was able to delete it and regain about 100 GB of space!