And so, you've decided to download an older version of Mac OS 10. There are many reasons that could point you to this radical decision. To brainstorm with, some of your apps may not be working properly (or only crash) on newer operating systems. Also, you may accept noticed your Mac'south functioning went downwards right later on the last update. Finally, if you lot desire to run a parallel copy of Mac OS X on a virtual automobile, you lot also will need a working installation file of an older Mac Os Ten. Further down we'll explain where to go one and what problems you may face downwards the road.

A list of all Mac Os X versions

We'll exist repeatedly referring to these Apple OS versions below, so it's good to know the basic macOS timeline.

Cheetah 10.0 Puma x.1 Jaguar 10.2
Panther ten.three Tiger ten.4 Leopard ten.5
Snow Leopard ten.6 Panthera leo ten.7 Mount Lion 10.8
Mavericks x.nine Yosemite x.10 El Capitan 10.11
Sierra x.12 High Sierra 10.xiii Mojave 10.14
Catalina 10.xv

Pace 1. Prepare your Mac for installation

Given your Mac isn't new and is filled with information, you will probably need enough complimentary infinite on your Mac. This includes not just space for the OS itself but also infinite for other applications and your user data. Ane more argument is that the free space on your disk translates into virtual memory so your apps have "fuel" to operate on. The chart below tells you lot how much gratis infinite is needed.

Annotation, that it is recommended that you install Os on a clean drive. Side by side, you lot will need plenty deejay space available, for example, to create Recovery Division. Hither are some ideas to free upwardly infinite on your drive:

  • Uninstall large unused apps
  • Empty Trash Bin and Downloads
  • Locate the biggest files on your computer:

Become to Finder > All My Files > Suit by size

Then you can motion your infinite hoggers onto an external bulldoze or a deject storage.

If you aren't comfortable with cleaning the Mac manually, in that location are some dainty automated "room cleaners". Our favorite isCleanMyMac as it'south most simple to utilise of all. It deletes arrangement junk, onetime broken apps, and the residual of subconscious junk on your bulldoze.

CleanMyMac X - Smart Scan complete

Download CleanMyMacfor Os 10.4 - 10.8 (free version)

Download CleanMyMac for OS 10.ix (costless version)

Download CleanMyMacfor OS 10.ten - 10.14 (free version)


STEP 2. Get a copy of Mac Bone 10 download