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Hey guys, Here is a guide on 'How to install OS X 10.9 on a PC with a Gigabyte 990FXA Series Motherboard and AMD FX Series CPU'.

It will also show you how to dual boot windows and OS X and even run the same windows install inside of OS X with VMWare Fusion.

Before we start, Here is the exact specification i am using for my Hackintosh install.

• Motherboard: Gigabyte 990FXA-UD3
• CPU: AMD FX-6100
• Memory: Corsair Vengeance 8GB 1600Mhz (2x4gb)
• Graphics Card: Sapphire AMD Radeon HD 7850 2GB OC Edition (1002 6819)
• Operating Systems: Windows 8 and OS X 10.9.1

Ok so although this guide is intended for install on the above hardware it may or may not work on other hardware, It will most likely work on the UD3, UD5 and UD7 motherboards aswell as most modern Radeon HD Graphics.

Requirements

The following items will be required in order for this to work.

• Windows 7, 8 or 8.1 (DVD or USB)
• Niresh 10.9 (Torrent: http://www.niresh12495.com [it's the most downloaded file currently])
• A USB Pen (Niresh - 10.9 - Mavericks USB Version.zip) or Dual Layer DVD+R (Niresh - 10.9 - Mavericks ISO Version.zip)
• Access to both Windows and the Niresh Mavericks USB at the same time.
• You need to take your time and be patient. Both windows and OS X take some time to install.
• 1 HDD that is able to be completely formatted (wipe partition table)

Note: you don't need Windows if you don't want to dual boot

Preparation

I am not going to cover how to write the DMG file to a USB pen or DVD and instead will just link you to http://www.macbreaker.com/2014/01/instal...iresh.html (Step 1a if your currently in OS X and 1b if your in Windows)

So once you have the Bootable USB/DVD with Niresh on it we are ready to begin.

We need to format the HDD with the partition type MBR (for some reason when i did this with windows it didn't work) to do this will shall boot to the Niresh USB/DVD and at the prompt highlight 'Niresh Mavericks' and simply type 'amdfx GraphicsEnabler=No PCIRootUID=1 -v' and press 'Enter'.

If you don't plan on dual booting you can skip to 'Installing OS X 10.9'.

After a short time it should start booting to the OS X installer, Select your language and then in the menu bar Select Utilities > Disk Utilities > Select the HDD you want to use > Partition > 2 Partitions and then set the 1st as MS-DOS (FAT) name it 'Windows' and the 2nd as 'Mac OS Extended (Journaled)' name it 'Mavericks' now select 'Options' and make sure it's set to 'MBR (Master Boot Record)' then press 'Apply'

OK now the HDD is properly partitioned, We now move on to installing Windows.

Installing Windows 7, 8 or 8.1

This is installed just like normal, Except you need to make sure it doesn't install the UEFI version (make sure to select the non UEFI DVD/USB entry from the boot menu)

Once your at the install simply do a 'Custom Install' and then install windows to the 1st Partition it will need to be formated to NTFS via the format button below prior to being installed.

After the install is complete go through the standard welcome screen and post install setup and then we can move on to installing Niresh's OS X 10.9

Installing Niresh OS X 10.9

And now we are on to the main event, Installing OS X.

Boot to the Niresh USB/DVD and then at the prompt highlight 'Niresh Mavericks' and simply type 'amdfx GraphicsEnabler=No PCIRootUID=1 -v' and press 'Enter'

Now you should be back at the OS X install screen, This time we will actually install it, Follow the on screen wizard until you get to the HDD Select page then select the 'Mavericks' disk but DO NOT PRESS NEXT/INSTALL instead press 'Customize' and uncheck the option 'GraphicsEnabler' located under the 'Graphics' section.

Now you can begin the install. Press the install button and prepare to wait a while depending on your SSD/HDD.

Fixing A Few Issues With OS X

Ok now we have OS X and Windows installed but most likely booting OS X from the HDD won't work and instead you will need to use the USB/DVD.

So once again boot to the Niresh USB/DVD but then at the prompt highlight 'Mavericks' instead of 'Niresh Mavericks' enter ' 'Kernel Cache'=amd GraphicsEnabler=No PCIRootUID=1 -v ' note the quotes need to be entered around the words 'Kernel Cache'.

After a little while it should boot to OS X and ask you to enter various information for the welcome screen, After you have entered this you should be at either the 'Login Screen' or the 'Desktop'.

If your using the exact same card as mine you most likely are not running at native resolution and are instead forced to 1024x768, To fix this we need to modify 2 kext files, if your running at native resolution skip the step below.

Load up a Terminal (Search > Terminal) and then type 'sudo su' and enter admin password, Now type 'nano /System/Library/Extensions/AMD7000Controller.kext/Contents/Info.plist' and then find '68181002' and change it to your device and vendor ID (mine is 68191002) once done press 'Ctrl or Win + X' and then repeat the same change for '/System/Library/Extensions/AMDRadeonX4000.kext/Contents/Info.plist'.

Now the graphics is sorted provided your using a similar card to mine atleast, Now we can sort out issues with the bootloader on the HDD, Download 'Chameleon Wizard' then run it and select 'Boot0HFS' as the install mode and then press 'Install'.

Now reboot and you should be able to boot from the HDD and select the 'Mavericks' option, you may need to enter 'GraphicsEnabler=No' and '-v' is useful to see more detailed/verbose information.

Congratulations you are done sorting out OS X, The steps below are optional but highly recommended.

Updating the AMD Kernel and OS X

So you successfully got OS X working on your system, Now we should update OS X to the latest version (10.9.1 as of the time i was writing this) and the AMD Kernel to a newer and faster version.

Download the following file http://www.osx86.net/files/download/3736...4-support/ and extract it.

Next select 'Go' on the menu bar, and then 'Go to folder' and then '/', This will put you to the root of the OS X Partition, Now we need to replace the mach_kernel with the download mach_kernel file. Simply copy and paste and confirm the authentication.

Now we need to copy the downloaded 'System.kext' to '/System/Library/Extensions/', once this is done you will most likely get some errors don't panic!.

Now we load 'Kext Wizard' (installed with niresh) and select 'Repair' and 'Rebuild' under the '/System/Library/Extensions/'.

Once 'Kext Wizard' is done, Click the 'Apple icon' in the 'Menu Bar' and select 'Software Update' and 'Update All', This will take a little while, When asked to reboot say yes.

Now your system should reboot and you should be back at OS X at 10.9.1 instead of 10.9.0.

Running Windows 8 Inside OS X Using VMWare Fusion

Ok so, So far we have Windows and OS X installed to the same HDD on your PC, Now we will use the physical install of Windows inside of VMWare Fusion this will allow us to use Windows both inside of OS X and as a actual boot option.

Of Course this requires VMWare Fusion and this is a commercial piece of software therefore you will need to acquire VMWare Fusion prior to continuing.

Ok so now that you have acquired VMWare Fusion and installed it we can continue on to setting up the 'boot camp' partition.

Firstly we need to make sure that the windows partition is set to be the active partition, to do this we can load 'Terminal' > 'sudo su' > 'fdisk -e /dev/rdisk0' > 'f 1' > 'write' > 'y' > 'exit'.

Ok now it should have set the windows partition as the active partition, Now load up 'VMWare Fusion' and select 'More Options' and then 'Install from bootcamp' and then 'Create bootcamp virtual machine'.

Now the VM should be created and you should be able to simply start the VM and Windows 7, 8 or 8.1 should start and start the vmware tools install procedure. Now exit the VM and VMWare.

Now we need to restore the active partition back to OS X by doing the following load 'Terminal' > 'sudo su' > 'fdisk -e /dev/rdisk0' > 'f 2' > 'write' > 'y' > 'exit'.

And now we are done! click the 'unity' button in VMWare to integrate it even more. We now have VMWare with Windows + Windows as Dual Boot with OS X.

Extras

R9 270 and R9 270x users can use this file to get graphics working correctly (http://www.osx86.net/files/file/3711-amd...70-series/) DON'T UNCHECK GRAPHICSENABLER DURING INSTALL OF OS X

Thanks to Niresh and everyone else involved!

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

Mavericks Iso Download

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.

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”

Download Mavericks Os Iso

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

10.9 Mavericks Iso

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.