In general, when your disk is full, you need to clean up your Mac from junk and free up space. It can also prevent applications from being able to launch or work properly, including suddenly crashing or simply ceasing to work. Lack of free storage on the startup disk leads to both unstable and slow Mac’s performance. How does “Startup Disk Full” affect your Mac? You can change that name but it would still be the startup disk of your Mac. By default, the Startup Disk is the disk named “Macintosh HD” and the user’s applications, files, and any data are also stored on this disk. Watch the video to see how easy it is to fix a startup disk full problem with MacCleaner Pro.Ī startup disk on Mac is a hard drive’s partition where macOS is installed.

Steps to clean up the startup disk on Mac. How to check the startup disk on your Mac?ĥ. What to do if the startup disk is full on Mac?Ĥ. How does “Startup Disk Full” affect your Mac?ģ. So based on 10+ years experience in safely cleaning Mac from junk files, we’ve decided to write a comprehensive guide about Mac’s startup disk.Ģ.

Our support team at Nektony got many emails from the users asking how to fix the Mac startup disk error. When the message “Your startup disk is almost full” appears on a Mac, most users get lost. Since macOS Big Sur, the error message about running low on disk space looks like that: Here is the error message the users get when the Mac’s startup disk is almost full: To resolve this issue, you need to free up enough disk space. This is often due to having too many files occupying your Mac’s hard drive, bringing free storage to a dangerously low level. The warning message indicating that your startup disk is almost full appears when there is no longer enough free storage space. What does “Your startup disk is almost full” mean?

How to clean hard drive on macbook air