And then, yous've decided to download an older version of Mac Bone X. At that place are many reasons that could point you to this radical decision. To brainstorm with, some of your apps may not be working properly (or simply crash) on newer operating systems. Also, you may accept noticed your Mac'due south performance went down right subsequently the last update. Finally, if you desire to run a parallel copy of Mac OS X on a virtual machine, y'all too will need a working installation file of an older Mac Bone X. Farther down nosotros'll explicate where to become ane and what problems you may face downwardly the route.

A list of all Mac OS Ten versions

We'll be repeatedly referring to these Apple Bone versions beneath, then it's skillful to know the bones macOS timeline.

Cheetah 10.0 Puma 10.1 Jaguar 10.2
Panther ten.three Tiger x.4 Leopard 10.5
Snow Leopard ten.6 Lion 10.vii Mountain King of beasts 10.viii
Mavericks 10.9 Yosemite 10.10 El Capitan 10.eleven
Sierra 10.12 High Sierra 10.thirteen Mojave 10.xiv
Catalina 10.15

STEP 1. Prepare your Mac for installation

Given your Mac isn't new and is filled with data, you will probably need enough free space on your Mac. This includes non merely infinite for the OS itself only too space for other applications and your user information. Ane more statement is that the free space on your disk translates into virtual retentivity so your apps have "fuel" to operate on. The chart beneath tells you how much free space is needed.

Annotation, that it is recommended that you lot install OS on a clean bulldoze. Next, you will need plenty disk infinite bachelor, for instance, to create Recovery Partition. Here are some ideas to free up space on your bulldoze:

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

Go to Finder > All My Files > Arrange by size

So you can move your space hoggers onto an external bulldoze or a cloud storage.

If yous aren't comfortable with cleaning the Mac manually, in that location are some nice automatic "room cleaners". Our favorite isCleanMyMac as it'due south most simple to use of all. It deletes organization junk, onetime broken apps, and the remainder of hidden junk on your drive.

CleanMyMac X - Smart Scan complete

Download CleanMyMacfor Bone x.4 - 10.8 (free version)

Download CleanMyMac for Bone 10.9 (free version)

Download CleanMyMacfor Bone ten.10 - 10.14 (gratuitous version)


STEP ii. Get a copy of Mac Bone 10 download