We also recommend using CCleaner to locate those large old files and delete those you don’t need. How to fix it: if your Mac doesn’t have enough storage, the easiest way to free up more disk space is by using CleanMyMac - an app that helps quickly detect and remove system junk and unnecessary files. Here you get a quick overview of the storage via the colorful bar. To check storage usage, click on the Apple logo on the top left of your screen, and select About This Mac, then click the Storage tab.
Otherwise, your Mac may suffer performance issues. In general, it’s a good practice to make sure your Mac disk has at least 20% free space available to use. Here are the common causes and solutions. This scenario applies to those of you who can use Finder to open folders or access files, but the process becomes much slower than usual. Situation #1: Finder is Slow But Still Usable
