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Os x installer free download - Apple Mac OS X Snow Leopard, ATI Universal Installer for Mac OS, R for Mac OS X, and many more programs. Universal USB Installer is not available for Mac but there are some alternatives that runs on macOS with similar functionality. The most popular Mac alternative is balenaEtcher, which is both free and Open Source.

It can create a USB OS X installer from 10.7 to 10.11 version. To use this program you must have a USB key 8 gig minimum 16 gig for El Capitan and an Installer.app Mac App store and of course a Mac or a Hackintosh to create the installer. The software works with the Terminal app to issue commands. Altough, there is a newer version of Mac OS 9.2.2 universal boot disk compiled in 2013 that is supposed to support most G3 and G4 models, it really doesn't boot a lot of them, while this 2002 one does. See also: Mac OS 9.2.2 'boot kit' for booting your G3 or G4 from an USB stick. Download Mac OS 9.2.2 Universal (2002 edition) for Mac.

• Latest Version:

  Universal USB Installer 1.9.9.0 LATEST

• Requirements:

  Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

• Author / Product:

  Pen Drive Linux / Universal USB Installer

• Old Versions:

• Filename:

  Universal-USB-Installer-1.9.9.0.exe

• MD5 Checksum:

  a477a32b6a67f0edb8e465e9591ad3db

• Details:

  Universal USB Installer 2020 full offline installer setup for PC 32bit/64bit

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.

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)

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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:

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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.

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

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:

• Supported version: 0.6.2

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.

To start we'll want to grab ourselves a copy of macOS. You can skip this and head to formatting the USB if you're just making a bootable OpenCore stick and not an installer. For everyone else, you can either download macOS from the App Store or with gibMacOS.

# Downloading macOS: Modern OS

• This method allows you to download macOS 10.13 and newer, for 10.12 and older see Downloading macOS: Legacy OS

From a macOS machine that meets the requirements of the OS version you want to install, go directly to the App Store and download the desired OS release and continue to Setting up the installer.

For machines that need a specific OS release or can't download from the App Store, you can use the gibMacOS utility.

Now let's grab gibMacOS, then unzip it into a local directory.

Next run the gibMacOS.command:

As you can see, we get a nice list of macOS installers. If you need beta versions of macOS, you can select C. Change Catalog. For this example we'll choose 1:

This is going to take a while as we're downloading the entire 8GB+ macOS installer, so it's highly recommended to read the rest of the guide while you wait.

Once finished, we'll next want to run the BuildmacOSInstallApp.command:

You will be prompted for the macOS installer files which were downloaded to macOS Downloads folder in the gibMacOS directory.

From the Finder, drill down to the folder containing the downloaded files and either drag it to the command line or 'Cmd+C' and paste it to the terminal.

Once the task is completed, exit the utility. You will find the Install file in the directory.

Move the newly created image to the Applications folder – this will simplify the next section.

# Downloading macOS: Legacy OS

• This method allows you to download much older versions of OS X, currently supporting all Intel versions of OS X(10.4 to current)

# Legacy macOS: Offline method

This method allows us to download full installers from Apple, however is limited to 10.10, Yosemite, so older OSes will need to be grabbed via the 'Online Method' mentioned below.

To start, head to one of the following links:

On step 4, you'll see either InstallOS.dmg for Sierra or InstallMacOSX.dmg for El Capitan and older. Download your desired version and a .pkg file should be provided.

Depending on what OS you're on, you can run this script and head to Setting up the installer however if you receive this error:

This means we'll need to manually extract the installer.

# Extracting the Installer

To start, grab the InstallMacOSX/InstallOS.dmg and mount it:

Next, let's open up terminal window and make a folder on our desktop to break things. Run one at a time:

Now we get to the fun part, extracting the installer(Note this may take a few minutes):

• For El Capitan(10.11) and older:

• For Sierra(10.12):

Next, run the following(one at a time):

• Yosemite:

• El Capitan:

• Sierra:

Once this is done, you can head to Setting up the installer!

# Legacy macOS: Online method

This method allows us to download legacy versions of macOS including 10.7 to current, however these are only recovery installers so require an internet connection inside the installer itself

To start, you'll want to use macrecovery.py instead. This tool is actually already bundled in OpenCorePkg:

Instructions for running are quite simple, choose from one of the below commands depending on which OS you want to download:

From here, run one of those commands in terminal and once finished you'll get an output similar to this:

Once this is done, format your USB as FAT32 with GUID Partition Scheme:

And finally, create folder on the root of this drive called com.apple.recovery.boot and place the newly downloaded BaseSystem/RecoveryImage files in:

From here, you can skip to Setting up OpenCore's EFI environment

# Legacy macOS: Disk Images

This method instead relies on hosted images either from Apple or Acidanthera, and restoring onto your drive.

# Acidanthera Images

The below installers were pulled from genuine Mac restore disks with their SMBIOS lock removed, contents of OS X itself have not been modified in any way.

# Apple Images

Note that these images require you to have an Apple Developer account to access.

# Restoring the drive

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Now comes the fun part, you'll first want to open the dmg you just downloaded and have it mounted. Now open Disk Utility and format your drive as macOS Extended(HFS+) with a GUID partition map:

Next we have 2 options to follow:

• ASR Restore(Apple Software Restore)
  • Terminal based, works with SIP enabled
• Disk Utility Restore
  • May require SIP disabled in newer OSes

# ASR

Here you'll simply want to open terminal and run the following:

• Note: This may not align with your setup, please change accordingly:
  • Change /Volumes/Mac OS X Install DVD to what your mounted Disk Image is called
  • Change /Volumes/MyVolume to what your USB is called

This will take some time but once you're finished, you can skip to Setting up OpenCore's EFI environment

# Disk Utility

Due to some pesky issues with Disk Utility, many restores can fail if SIP is enabled. If you have issues we recommend either using the ASR Method or disable SIP.

To start, open Disk Utility and you should see both your USB drive and the Disk Image in the sidebar. From here, select restore

This will take some time but once you're finished, you can skip to Setting up OpenCore's EFI environment

If you get an error such as this one during restore:

This likely means SIP needs to be disabled, however we recommend using ASR Method instead.

# Setting up the installer

Now we'll be formatting the USB to prep for both the macOS installer and OpenCore. We'll want to use macOS Extended (HFS+) with a GUID partition map. This will create two partitions: the main MyVolume and a second called EFI which is used as a boot partition where your firmware will check for boot files.

• Note: By default, Disk Utility only shows partitions – press Cmd/Win+2 to show all devices (alternatively you can press the View button)
• Note 2: Users following 'Legacy macOS: Online method' section can skip to Setting up OpenCore's EFI environment

Next run the createinstallmedia command provided by Apple. Note that the command is made for USB's formatted with the name MyVolume:

This will take some time so you may want to grab a coffee or continue reading the guide (to be fair you really shouldn't be following this guide step by step without reading the whole thing first).

You can also replace the createinstallmedia path with that of where your installer's located (same idea with the drive name).

Pulled from Apple's own site: How to create a bootable installer for macOS

# Legacy Setup

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For systems not supporting UEFI boot, see below:

To start, you need the following:

• BootInstall_IA32.tool or BootInstall_X64.tool
  • This can be found in OpenCorePkg under /Utilties/LegacyBoot/
• Install USB(Created above)

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Within your OpenCore build folder, navigate to Utilities/LegacyBoot. Here you'll find a file called BootInstall_ARCH.tool. What this does is install DuetPkg to your desired drive.

Now run this tool in terminal with sudo(This tool will likely fail otherwise):

This will give you a list of available disks, choose yours and you will be prompted to write a new MBR. Choose yes[y] and you'll be finished.

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This will provide you with an EFI partition with either a bootia32 or bootx64 file

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# Setting up OpenCore's EFI environment

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Setting up OpenCore's EFI environment is simple – all you need to do is mount our EFI system partition. This is automatically made when we format with GUID but is unmounted by default, this is where our friend MountEFI comes in:

You'll notice that once we open the EFI partition, it's empty. This is where the fun begins.

# Now with all of this done, head to Setting up the EFI to finish up your work