Security Update 2021-004 (Catalina) macOS Catalina Security Update 2021-004 (19H1323) is recommended for all users and improves the security of macOS. Mac Os Cheetah; A list of all Mac OS X versions. We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline. Mac OS X Public Beta expired and ceased to function in spring 2001. Version 10.0: 'Cheetah' On March 24, 2001, Apple released Mac OS X 10.0 (internally codenamed Cheetah).

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So, you’ve decided to download an older version of Mac OS X. There are many reasons that could point you to this radical decision. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. Also, you may have noticed your Mac’s performance went down right after the last update. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Further down we’ll explain where to get one and what problems you may face down the road.

A list of all Mac OS X versions

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

Mac OS X Public Beta expired and ceased to function in spring 2001. Version 10.0: 'Cheetah' On March 24, 2001, Apple released Mac OS X 10.0 (internally codenamed Cheetah). The initial version was slow, incomplete, and had very few applications available at the time of its launch, mostly from independent developers. All versions of Mac OS X that were made to run on PowerPC systems (with the exception of Leopard) had a Mac OS 9 emulation layer called 'Classic'. It allowed Mac OS X to run Mac OS 9 applications that weren't updated to run natively on OS X (known as carbonization based on the Carbon API). Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.

• All versions of Mac OS X that were made to run on PowerPC systems (with the exception of Leopard) had a Mac OS 9 emulation layer called 'Classic'. It allowed Mac OS X to run Mac OS 9 applications that weren't updated to run natively on OS X (known as carbonization based on the Carbon API).
• Nov 29, 2017 How to download older Mac OS X versions via the App Store If you once had purchased an old version of Mac OS X from the App Store, open it and go to the Purchased tab. There you’ll find all the installers you can download.

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 not just space for the OS itself but also space for other applications and your user data. One 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 how much free space is needed.

Note, that it is recommended that you install OS on a clean drive. Next, you will need enough disk space available, for example, to create Recovery Partition. Here are some ideas to free up space on your drive:

• 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 cloud storage.
If you aren’t comfortable with cleaning the Mac manually, there are some nice automatic “room cleaners”. Our favorite is CleanMyMac as it’s most simple to use of all. It deletes system junk, old broken apps, and the rest of hidden junk on your drive.

Download CleanMyMac for OS 10.4 - 10.8 (free version)

Download CleanMyMac for OS 10.9 (free version)

Download CleanMyMac for OS 10.10 - 10.14 (free version)

STEP 2. Get a copy of Mac OS X download

Normally, it is assumed that updating OS is a one-way road. That’s why going back to a past Apple OS version is problematic. The main challenge is to download the OS installation file itself, because your Mac may already be running a newer version. If you succeed in downloading the OS installation, your next step is to create a bootable USB or DVD and then reinstall the OS on your computer.

How to download older Mac OS X versions via the App Store

If you once had purchased an old version of Mac OS X from the App Store, open it and go to the Purchased tab. There you’ll find all the installers you can download. However, it doesn’t always work that way. The purchased section lists only those operating systems that you had downloaded in the past. But here is the path to check it:

1. Click the App Store icon.
2. Click Purchases in the top menu.
3. Scroll down to find the preferred OS X version.
4. Click Download.

This method allows you to download Mavericks and Yosemite by logging with your Apple ID — only if you previously downloaded them from the Mac App Store.

Mac Os Cheetah

Without App Store: Download Mac OS version as Apple Developer

If you are signed with an Apple Developer account, you can get access to products that are no longer listed on the App Store. If you desperately need a lower OS X version build, consider creating a new Developer account among other options. The membership cost is $99/year and provides a bunch of perks unavailable to ordinary users.

Nevertheless, keep in mind that if you visit developer.apple.com/downloads, you can only find 10.3-10.6 OS X operating systems there. Newer versions are not available because starting Mac OS X Snow Leopard 10.7, the App Store has become the only source of updating Apple OS versions.

Purchase an older version of Mac operating system

You can purchase a boxed or email version of past Mac OS X directly from Apple. Both will cost you around $20. For the reason of being rather antiquated, Snow Leopard and earlier Apple versions can only be installed from DVD.

Buy a boxed edition of Snow Leopard 10.6
Get an email copy of Lion 10.7
Get an email copy of Mountain Lion 10.8

The email edition comes with a special download code you can use for the Mac App Store. Note, that to install the Lion or Mountain Lion, your Mac needs to be running Snow Leopard so you can install the newer OS on top of it.

How to get macOS El Capitan download

If you are wondering if you can run El Capitan on an older Mac, rejoice as it’s possible too. But before your Mac can run El Capitan it has to be updated to OS X 10.6.8. So, here are main steps you should take:

1. Install Snow Leopard from install DVD.
2. Update to 10.6.8 using Software Update.
3. Download El Capitan here.

“I can’t download an old version of Mac OS X”

If you have a newer Mac, there is no physical option to install Mac OS versions older than your current Mac model. For instance, if your MacBook was released in 2014, don’t expect it to run any OS released prior of that time, because older Apple OS versions simply do not include hardware drivers for your Mac.

But as it often happens, workarounds are possible. There is still a chance to download the installation file if you have an access to a Mac (or virtual machine) running that operating system. For example, to get an installer for Lion, you may ask a friend who has Lion-operated Mac or, once again, set up a virtual machine running Lion. Then you will need to prepare an external drive to download the installation file using OS X Utilities.

After you’ve completed the download, the installer should launch automatically, but you can click Cancel and copy the file you need. Below is the detailed instruction how to do it.

STEP 3. Install older OS X onto an external drive

The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks.

1. Start your Mac holding down Command + R.
2. Prepare a clean external drive (at least 10 GB of storage).
3. Within OS X Utilities, choose Reinstall OS X.
4. Select external drive as a source.
5. Enter your Apple ID.

Now the OS should start downloading automatically onto the external drive. After the download is complete, your Mac will prompt you to do a restart, but at this point, you should completely shut it down. Now that the installation file is “captured” onto your external drive, you can reinstall the OS, this time running the file on your Mac.

1. Boot your Mac from your standard drive.
2. Connect the external drive.
3. Go to external drive > OS X Install Data.

Locate InstallESD.dmg disk image file — this is the file you need to reinstall Lion OS X. The same steps are valid for Mountain Lion and Mavericks.

How to downgrade a Mac running later macOS versions

If your Mac runs macOS Sierra 10.12 or macOS High Sierra 10.13, it is possible to revert it to the previous system if you are not satisfied with the experience. You can do it either with Time Machine or by creating a bootable USB or external drive.
Instruction to downgrade from macOS Sierra

Instruction to downgrade from macOS High Sierra

Download nba 2k17 on mac for free. Instruction to downgrade from macOS Mojave

Instruction to downgrade from macOS Catalina

Before you do it, the best advice is to back your Mac up so your most important files stay intact. In addition to that, it makes sense to clean up your Mac from old system junk files and application leftovers. The easiest way to do it is to run CleanMyMac X on your machine (download it for free here).

Visit your local Apple Store to download older OS X version

If none of the options to get older OS X worked, pay a visit to nearest local Apple Store. They should have image installations going back to OS Leopard and earlier. You can also ask their assistance to create a bootable USB drive with the installation file. So here you are. We hope this article has helped you to download an old version of Mac OS X. Below are a few more links you may find interesting.

These might also interest you:

Download Mac OS X Snow Leopard v10.6 free latest standalone offline DMG image setup for Macintosh. Final Apple Mac OS X Snow Leopard 10.6 is a powerful Mac Operating System with various new features and many enhancements. Mac OS X 10.5 Leopard. Get it for PowerPC or 32bit Intel. Mac OS X 10.4 Tiger. Mac OS X 10.4.7 or later is required. Get it for PowerPC or Intel. Mac OS X 10.3 Panther. QuickTime 6.5.2 or later is required. Get it for PowerPC. Mac OS X 10.2 Jaguar. Get it for PowerPC. MacOS X was Apple's replacement for their classic MacOS.MacOS X is based on NeXTSTEP, a Unix-based OS. The first consumer release also featured a new user interface appearance called 'Aqua'. Mac OS X version 10.0 (code named Cheetah) is the first major release of Mac OS X and the first version of Mac OS X (renamed OS X in 2012 and macOS in 2016), Apple's desktop and server operating system.Mac OS X 10.0 was released on March 24, 2001 for a price of US$129. It was the successor of the Mac OS X Public Beta and the predecessor of Mac OS X 10.1 (code named Puma).

Download Mac OS X 10.0 Cheetah DMG by the link given below. The setup file is a complete offline installer which can be used for virtualization purposes on different platforms like VirtualBox, VMware…

File: mac_OS_X_10.0_Cheetah.dmg

Size: 400 MB

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Released: March 24, 2001

Last update: June 22, 2001

Mac OS X 10.0 is the first major release of the Mac OS X series. The operating system was released with the code name “Cheetah” on March 24, 2001.

Later in 2012, the operating system’s name was changed from “Mac OS X” to “OS X”, which afterward in 2016 was changed to macOS.

It was the successor of “Mac OS X Public Beta” and is the predecessor of “Mac OS X 10.1” aka code-named Puma.

macOS Cheetah was an utterly different operating system from the classic Mac OS. After a very long wait, Apple has brought an operating system that is entirely different in every expect.

It was completely different from Mac OS 9’s, as Apple introduced Darwin Unix-like core and a completely new system of memory management.

System Requirements

These are the specs you will need to run macOS X 10.0 Cheetah. Remember that Mac OS X 10.0 was not well welcomed with open arms in the Macintosh community, as a result, there is a need for high specs.

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You will need at least 125 MB RAM and 1,500 MB of free storage. As for processors computers like Power Macintosh G3 Beige, G3 B&W, G4, G4 Cube, iMac, PowerBook G3, PowerBook G4, and iBook supports the operating system. Observing all of the computers we got the idea, that you will need at least 400 MHz- 1.67 GHz of processor.

Features

The Mac OS X Cheetah is definitely an operating systempacked with numbers of features and with continuous development, it has becomeone of its kind. Now, here are some features of Mac OS X 10.0 Cheetah who canmake your system worthwhile.

Interface

The interface is one of the biggest and most anticipated features of Mac OS X 10.0. Apple has definitely had done some work on the macOS Cheetah’s interface as the operating system has an Aqua interface. Aqua interface is a blue, water-themed designed for Cheetah OS. The UX is now user friendly with tons of tools added.

The idea behind the new interface was to provide an operating system where users could work flawlessly without having any kind of interruption.

Dock

This is a new feature is used to organize the Mac OS X application on a user interface.

Multilingual Snags

Basically, Apple tried to begin a new era (which practically ended on with Mac OS X 10.2 aka Jaguar) where Apple offered two types of installations for the users. One of which was 1Z where users had an extension of multilingual support. Chinese, traditional Chinese, and Korean languages were available in the 1Z installation.

On the other hand, 2Z is the installation type with few language support (almost to 8).

Time Machine

This feature will provide the uses of a backup of their files. Imagine your files being lost for some reason, on those situations features like Time Machine will help you.

PDF Support

Mac OS X 10.0 supports PDF files now. The operating system can open any PDF file, edit the file and print it without losing the original layout of the document. The biggest change made with this feature is that you are also able to instantaneously create a PDF file.

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Safe Environment

Security is one of the wildest known features of Apple products. Either you are using iPhone or iPad, MacBook or iMac, security is not a threat at all.

When you are using different third-party tools, you are putting your data and device at risk. However, with macOS Cheetah those threats are taken in minimum.

Download Osx 10 Cheetah

Sherlock Search Engine

Sherlock named after Sherlock Holmes was released in Mac OS X Cheetah. The tool was a file and web search engine created by Apple Inc. It was a great deal as it helped users to find the files they wanted either on their devices or on the internet.

Protected Memory

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Here this feature protects your other application’s memory when a single application’s memory is corrupted. For moments when one of your applications is in critical condition, this feature will secure the rest of the applications from the threat.

Download macOS x 10.0 Cheetah DMG

You can download the Mac OS X 10.0 Cheetah ISO file image by the links given below. Make sure all the requirements of the system are met and then proceed with the download and installation. Still, if you are having any kind of problem, please comment down below.

File: mac_OS_X_10.0_Cheetah.dmg

Size: 400 MB

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Program Class: Operating System

Language: English

Released: March 24, 2001

Last update: June 22, 2001

Predecessor:Mac OS X Public Beta

Successor:Mac OS X 10.1

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Setup Type: Offline Installer/ Full standalone setup