Go to the 'Storage' tab here to view a visual representation of the startup disk and what is taking so much space on it. This will display detailed information about your system. To do this, just go to the Apple menu on the Finder and click on the 'About This Mac' option. Otherwise, MacBook suffers from a slow startup process. Ideally, the data should not consume more than 75-80% part of the total space. It is recommended to visit Mac's storage settings and know what kind of data is taking so much space on the startup disk. In order to learn how to fix startup disk full on MacBook Pro, Air, and other models, you need to diagnose the problem first. What is Taking up Space on Mac Startup Disk A stacked disk or limited free space can cause Mac slow startup and other issues. Here, you can view details about the startup disk and can go to the 'Storage' section to further diagnose it. You can get to know more about it by visiting Mac's Finder > About This Mac. In this case, a dedicated disk functions as a startup disk. Sometimes, users partition the disk or have two (or more) disks installed as well. Apart from storing the OS and app data, it can also be used for different purposes. Ideally, the startup disk is marked as Macintosh HD or Fusion HD since it is the root disk in the system.Īlmost all the users have a single disk on their Mac, which also functions as a startup disk. Though, the disk that stores macOS and other system components are known as the startup disk. Most of these partitions and disks store all kinds of user data. Just like every other operating system, Mac also lets us manage its storage via different disks and partitions. How to Prevent Almost Full Mac Startup Disk

Mac your disk is almost full