CAUTION: With macOS 11.3 and newer, XhciPortLimit is broken resulting in boot loops (opens new window).macOS 12 and above note: As recent macOS versions introduce changes to the USB stack, it is highly advisable that you map your USB ports (with USBToolBox) before installing macOS.This method allows you to download macOS 10.13 and newer, for 10.12 and older see Downloading macOS: Legacy OS. For everyone else, you can either download macOS from the App Store or with Munki's script. You can skip this and head to formatting the USB if you're just making a bootable OpenCore stick and not an installer. To start we'll want to grab ourselves a copy of macOS. While you don't need a fresh install of macOS to use OpenCore, some users prefer having a fresh slate with their boot manager upgrades. Getting started with ACPI (opens new window).Now with all of this done, head to Setting up the EFI to finish up your work.Download for free OS X Lion on Apple’s support page here or OS X Mountain Lion on Apple’s support page here.Pay for OS X Lion and Mountain Lion $19.99 through the Apple Store.So if by any chance you have an old Mac and want to install an old version, you can choose one of the two paths: The new M1 Macs, for example, can only be restored to macOS 11 Big Sur.

For example, only Macs launched before 2012 are eligible to install them and the user must factory reset their computer to be able to run these older OS X systems. Why would I install an older Mac OS X software?Īs for now, a limited number of Macs can install these old operating systems.

OS X Snow Leopard 10.6.8, Lion 10.7, or Mountain Lion 10.8 already installedĪpple notes that Macs shipped with Mac OS X Mountain Lion cannot install OS X Lion while Macs shipped with Mac OS Mavericks or later cannot install Mountain Lion.

Mac OS X Mountain Lion requires the following technologies:

Some features require a compatible Internet service provider fees may apply.

Some features require an Apple ID terms apply.

OS X Snow Leopard 10.6.6 or later or OS X Lion 10.7 already installed.

Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor.

Mac OS X 10.7 Lion is available for older systems that are not compatible with the latest version of macOS and requires the following: Ten years ago, users needed to pay Apple $19.99 for the latest version of its OS X, and now you can finally download these two for free.Īs reported by MacWorld, through support pages, it’s possible to download them for free. Released in 20, Mac OS X Lion and OS X Mountain Lion were the last paid software updates for the Mac.

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