
Can You Delete Files in the System Data?Īs mentioned, users were wondering how come the system data on their Mac is big, even bigger than their data files like photos, movies, documents, and others combined. These are Application leftovers, temp files and caches, disk images, plug-ins and extensions, archives, and other files that don’t fit in other categories. So, the question is, what exactly is System Data? There are several files that are included in the System Data tab on Mac storage. In short, Apple split the Other Storage on Mac into two separate tabs. Apparently, Apple changed the previous nomenclature “Other Storage” and replaced it with “System Data.” Aside from that tab, Apple also added the “macOS” tab. When Apple shipped macOS Catalina, many users were surprised to find a new tab in Storage settings called System Data. What is System Data on Your Mac’s Storage? Read along to find out how to fix it when macOS System Data is huge. So, in this guide, I will share with you some of the things I did to fix this problem and eventually free up some precious storage on my Mac.

That’s definitely not normal, so you start asking, why is your Mac’s system data so big? I can certainly feel you, as the same situation recently happened to my less-than-a-year-old MacBook Air. Upon checking System Settings > General > Storage, you find that more than half of your Mac’s SSD is being used by System Data. So after several months of enjoying your Mac, it suddenly slows down.
