

Click the Manage button above the storage bar to open the Storage Management Window, where you can see the size of every category.Īlternatively, you can also know how much storage space is used or unused with the Disk Utility.If you have free space left, it should appear at the end of the storage bar. The longer the section length, the more space that category takes up. Every colored section represents a category. Click the Storage tab, and you will see that the storage bar is divided into sections.Click on the Apple icon in the upper left corner of your screen and choose About This Mac.To check what files are taking up your startup disk space, follow the steps below: When the system says that your startup disk is almost full, you need to pay attention to it. And what you need to do is free up disk space. This can be caused by too many files and applications stored on the disk. This message means that your primary disk has run out of storage capacity. What Does It Mean When Your Startup Disk Is Full on Mac? If you are one of the few users who have 2 or more disks in Mac, you are free to choose which one to be your startup disk. Thus, the Macintosh HD is the default startup disk.

You can check your startup disk by clicking the Apple menu > System Preferences > Startup Disk. The disk where your current macOS is installed is the startup disk. Then expand them when you need to use them again.ĭid you empty the Trash? When you move a file to the Trash, its storage space doesn't become available until you empty the Trash.How to Delete System Data on Mac What Is Startup Disk on Mac? If you don't want to delete certain files, you might be able to save space by compressing them. Check the Users folder on Macintosh HD for any shared files that you no longer need to share.If your Mac is set up for multiple users, delete users that no longer need access to your Mac. Or ask them to follow the steps in this article after logging in to their user account. Also check the Users folder on Macintosh HD for any undeleted data belonging to deleted users.If you use your Mac to back up your iPhone or iPad, you can delete old backups.Also choose Mailbox > Erase Deleted Items. If you use the Mail app for your email, choose Mailbox > Erase Junk Mail from the menu bar in Mail.Delete files in your Downloads folder. Open this folder from the Dock, or by choosing Go > Downloads from the menu bar in the Finder.Delete music, movies, podcasts, or other media, especially if it's media that you can stream or download again as needed.You can also delete files that you no longer need. If you have another storage device, such as an external drive connected to your Mac, you can move files to that device. Media files such as photos and videos can use a lot of storage space, so you can take steps such as these:
