

What the tool can do for you includes junk file cleaning, unwanted app removal, and large/duplicate file detection and deletion. If you're running low on storage space, use BuhoCleaner, one of the best Mac cleaners, to quickly clear unnecessary files from your Mac. To know how much free space you have left, click the Apple menu > About This Mac > Storage. As a rule of thumb, you'd better keep at least 24 GB of free space. You'll also need some extra space to install it successfully. That doesn't mean you only need 12 GB of free space. The installer package for macOS Ventura is about 12 GB.

Insufficient storage space is one of the most critical factors that you can't update Mac. If your System Preferences do not include Software Update, then you are using macOS 10.13 or older, and you will need to use the App Store to update.Software Update will only show upgrades that are compatible with your Mac.
