Review Details to see the list of suggested optimizations.

Select the Smart Scan tab and click Scan.Optimizing your Mac with CleanMyMac is effortless: To make things easy, use a specialized app like CleanMyMac, which will quickly free up space by detecting unused apps and large files, and offering to completely delete them, with all their hidden corresponding files, in one quick click. Depending on how tidy you are, this might take quite a bit of time. You can, of course, do so manually by deleting unused files and uninstalling old software to free up disk space. You’ll need around around eight gigabytes free depending on which macOS you downgrade to.Įven if you do have enough space, it’s a good idea to clean your computer before installing the desired operating system. Tabbing over to Storage will let you know how much disk space you have available. Clicking the apple in the top left corner of your desktop and selecting About This Mac will allow you to see what OS X version you are currently running. Make sure you are ready to downgrade your operating system by checking in with what version of OS X you already have and ensuring you have enough hard drive room to download the older version. In this article, we’ll take you through everything you need to download and install an old OS X on your Mac. Try free ✕ How to Install Old OS X on Your MacĪlthough you might think that going back to the old macOS is not possible by looking at the App Store Updates tab, it’s actually quite easy to do.

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