So, you've decided to download an older version of Mac Os Ten. There are many reasons that could point you lot to this radical decision. To begin with, some of your apps may non exist working properly (or simply crash) on newer operating systems. Too, you may have noticed your Mac'southward performance went downwards correct after the last update. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you also will need a working installation file of an older Mac Os 10. Farther down we'll explicate where to get one and what problems y'all may confront down the route.

A list of all Mac Bone X versions

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

Cheetah x.0 Puma 10.1 Jaguar 10.two
Panther x.3 Tiger 10.4 Leopard 10.5
Snow Leopard ten.vi Lion 10.vii Mount Panthera leo 10.eight
Mavericks ten.9 Yosemite 10.10 El Capitan ten.11
Sierra 10.12 Loftier Sierra x.thirteen Mojave 10.14
Catalina 10.15

STEP i. Set up your Mac for installation

Given your Mac isn't new and is filled with data, you will probably demand enough gratuitous space on your Mac. This includes not simply space for the OS itself but as well space for other applications and your user data. Ane more argument is that the costless infinite on your disk translates into virtual retentivity and then your apps take "fuel" to operate on. The nautical chart below tells you how much free infinite is needed.

Notation, that it is recommended that you install OS on a clean drive. Next, you lot will need plenty deejay space available, for example, to create Recovery Partition. Here are some ideas to gratis up space on your bulldoze:

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

Go to Finder > All My Files > Arrange by size

Then you can move your space hoggers onto an external drive or a deject storage.

If you aren't comfy with cleaning the Mac manually, at that place are some prissy automatic "room cleaners". Our favorite isCleanMyMac every bit it's most simple to apply of all. It deletes system junk, old cleaved apps, and the rest of hidden junk on your drive.

CleanMyMac X - Smart Scan complete

Download CleanMyMacfor Os 10.4 - 10.8 (complimentary version)

Download CleanMyMac for OS 10.9 (free version)

Download CleanMyMacfor OS 10.10 - ten.14 (free version)


Stride 2. Get a copy of Mac Bone X download