In this tab, you will see how much of the disk is occupied by certain types of files, which are:

Then, choose the Storage If you have an older version of OS X, you may need to click on More Info before you can access the Storage tab.

But before you can do that, you first need to know what’s filling up space, so you’d know what you need to get rid of. The First Step: Knowing What’s Eating Up Your Startup Disk Spaceīasically, fixing the startup disk full error requires freeing up disk space. Once it begins to get filled, it will try to warn you before you experience the eventual slow-down.

Essentially, the startup disk is where the Mac OS will boot from, so it needs enough space in order to do its job.

It is also where most of your files and apps are probably stored. It is the partition in Mac’s hard disk where the Mac OS itself is installed. What is the Startup Disk?īy default, the startup disk is what’s known as the Macintosh HD. So, if you keep on ignoring the friendly reminder to optimize your storage, your Mac will not thank you for it. Eventually, you will notice your Mac starting to run slow, which defeats the purpose of owning a fast and reliable Mac in the first place.įor those who don’t know, it’s important to note that you should have at least 15% of free startup disk space for a Mac computer to run properly. About Outbyte, uninstall instructions, EULA, Privacy Policy.Īside from this window popping up in the most inopportune moment, such as when you’re backing up your iPhone or saving a document that you have been working on for hours already, the issue can easily escalate.

How to make space on startup disk mac