Learn how to clear system data on your Mac to free up storage space, improve performance, and optimize your device in just a few steps.

One of our most popular articles has been our How-To: Change the system date on OS X in terminal. That article was written in 2016, back when macOS was called OS X. I have updated it to reflect that ...

When an iPhone suddenly refuses to install a new app or take another photo, the culprit is often a mysterious bar in Settings labelled “System Data.” Instead of music, photos or apps you recognise, ...