It has one “disk” on it, so all 500GB of storage is on that disk.Let’s look at an example of a Mac with only one hard disk: Most Mac users have just one disk, but power users may have two or more. Each disk (or partition) has your Mac data on it, which consists of your operating system, applications, etc. Your Mac hard drive consists of disks (or partitions). Understanding What “Your Disk is Almost Full” Means What is a startup disk?Ī startup disk, as taken from the Apple Support article, is a volume or partition of a drive that contains a usable operating system. Still confused? Let’s break it down for you. This problem comes under two different notifications: “Startup disk full” in older macOS versions and “Your disk is almost full” in newer ones.Īnnoying as it may be, it’s an issue that has many solutions, and we’ll cover them in this article. So, let’s find out what exactly “Your disk is almost full” means and how to fix it. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X.Ī full startup disk is something that every Mac user may experience. So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.

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