

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. That gave me conflicting reports each restart but did inform me on one restart that ~100 GB of data was purgeable.So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article. You can also look at the built in Disk Utility. The directory has restrictive permissions, so I assume that was the culprit.ĭeleting that directory isn't harmful to the system as far as I know, and it regenerates when the OS needs it again. Daisy Disk, however, did find a glob of ~75 GB that it couldn't scan because of permissions, even when scanning as admin. Now my System section is 50 GB (used to be 120 GB).ĭisk Inventory X gave me different sizes than the System Information window and it didn't find any problematically large files.

The system couldn't read the size of the directory so I figured it was a problem folder, so I deleted it, emptied the garbage, and restarted. I read an answer somewhere to an issue related to this that I could delete the folder in /System/Library/Caches/. I restarted a few times and nothing seemed to happen. One night the size of the 'System' section of my storage increased 40 GB in an hour (though, I am running the High Sierra Beta).

I believe that when I got my MBP, the size was around 16 GB.
