enter image description hereenter image description hereThis is very weird. New iMac. 4 months old, brand new. 1 Terabyte of storage. The Mac keeps saying I am out of storage, but when you add up all of my word docs, downloads, applications, etc., it only totals about 10Gb. Then when I click on "manage storage" it gives me a breakdown of what my computer is using and at the bottom line it says "system: 990 GB" - Shouldn't the system be operating at about 8-9GB tops?!!? I have deleted all surplus items and literally the total of all downloads, documents, files, applications, etc. is only about 10GB but it says my storage is almost full!! Please help!

I put up a photo of the storage management screen before I deleted some more stuff.... This is nuts.

  • That screenshot says your System is using nearly a TB. Did you buy this iMac brand new from Apple or other reputable retailer, or from another source?
    – Allan
    Jul 30 '17 at 23:45
  • This was purchased brand new from Apple. As I mentioned in the post, the system says its using 990GB, but that's crazy. What could this be?
    – Steve
    Jul 30 '17 at 23:51
  • Could you please scan your computer with Disk Inventory X (derlien.com) and attach a screenshot? It would be very helpful to know what files take up the most space. Jul 31 '17 at 2:51
  • Ok, I added a screenshot of the Disk Inventory X scan. See above. It shows that my "log file" is taking up 895GB...
    – Steve
    Jul 31 '17 at 16:20

This happened to me once. I used Daisy Disk to figure out where the disk usage was coming from.

In my case, there was a problem with the coresymbolicationd cache, which was growing indefinitely (eating up hundreds of gigabytes).

After deleting /System/Library/Caches/com.apple.coresymbolicationd, everything returned to normal.

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