Click on the third tab above marked “Storage” (on older versions of OS X you may have to click the “More Info” button first).Click on the top left apple icon and go to “About This Mac”.You can get a nice graphical overview of what is taking up space on you startup disk in a few quick steps. RELATED : Dropbox for macOS To Stop Supporting External Drives Manual Method 1: Find out what’s occupying your storage space However, you can use Gemini 2, which makes it easy to find and remove duplicate files on your Mac. It basically automates the steps mentioned in this article with the exception of finding the duplicate files and restarting your Mac. If you don’t want to do the steps mentioned below manually, then you can use CleanMyMac 3 to get rid of temporary files, clean up extra language files, uninstall applications, get rid of extra files left behind by application uninstallations, find and get rid of big attachments stored in Mail, and a whole lot more. How to fix ‘startup disk is almost full’ warning on your Mac Simplest Method Note: It is highly suggested that you backup your hard drive with Time Machine before you take any of the following steps in order to ensure you don’t accidentally delete any needed data.

To keep your Mac at its optimal performance level and to banish the “startup disk full” message for good, here are some easy steps to find what’s taking up most of your space and how to clear up your storage quickly and painlessly. While you may be able to temporarily fix this issue by deleting any large unused files clogging up your storage drive, persisting with low storage space can impact the startup speed and performance of your computer. We all love our Macs but they tend towards the lower end in terms of default storage space, so many users will inevitably come across the dreaded “startup disk is almost full” message at some point.

Mac startup disk almost full