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    UniBeast: Install OS X Mavericks on Any Supported Intel-based PC

    The following guide is a complete walkthrough to installing or updating to the latest version of OS X. It requires no experience and all of the necessary installation and post-installation tools are available on tonymacx86.com.

    UniBeast is a tool that creates a bootable installer out of your downloaded version of OS X. In order to start fresh, you'll need access to a functional computer running Mac OS X Snow Leopard 10.6.8 or later. This is a requirement, as you need access to the Mac App Store to download OS X and create the installation drive. To start from scratch, booting the 10.6 Snow Leopard Retail DVD directly, check out iBoot + MultiBeast.

    UniBeast Overview

    1. Download the OS X Mavericks Application from the Mac App Store
    2. Prepare a UniBeast USB flash drive
    3. Install OS X Mavericks
    4. Install the bootloader and drivers using MultiBeast

    Before You Begin

    1. Register here at tonymacx86.com. If you don't have a user account, create one!
    2. Get our latest MultiBeast and UniBeast tools from the downloads section.
    3. Purchase a 8GB or larger USB drive.

    STEP 1: Download OS X Mavericks

    The full operating system is a free download for anyone who has purchased Mac OS X Snow Leopard, Lion, or Mountain Lion. Download the Application from the Mac App Store using your Apple ID on any Mac or functional computer running Mac OS X 10.6.8 or later.

    1. Open Mac App Store
    2. Log in with your Apple ID
    3. Download OS X Mavericks

    The Application Install OS X Mavericks will appear in /Applications.

    STEP 2: Create a Bootable USB Drive with UniBeast

    Take a deep breath and take your time- this is pretty simple, but it's easy to miss things if you rush. Follow each step to the letter.

    1. Insert the USB drive
    2. Open /Applications/Utilities/Disk Utility
    3. Highlight the USB drive in left column
    4. Click on the Partition tab
    5. Click Current and choose 1 Partition
    6. Click Options...
    7. Choose Master Boot Record
    8. Under Name: type USB (You can rename it later)
    9. Under Format: choose Mac OS Extended (Journaled)
    10. Click Apply then Partition
    11. Download and run UniBeast
    12. Click Continue, Continue, Continue, Agree
    13. At Destination Select, choose USB and click Continue
    14. If using a Socket 1156 system without Rate Matching Hub (RMH) USB choose Legacy USB Support
    15. If using a laptop, choose Laptop Support
    16. Click Continue
    17. Enter password and click Install
    UniBeast will now create the bootable USB drive. The process will only take about 10-15 minutes, depending on system and drive speed, but will show hours. This is normal. Do not unplug or stop during this time.

    18. Drag MultiBeast to your completed USB drive.

    STEP 3: Recommended UEFI Settings

    If you're installing on a recommended CustoMac desktop with AMI UEFI, the options are simple. For other systems make sure to set your BIOS or UEFI to Optimized Defaults, and your hard drive to AHCI mode. Award BIOS settings are listed here.

    1. To access BIOS/UEFI Setup, press and hold Delete on a USB Keyboard while the system is booting up
    2. Set to Optimized Defaults.
    3. (Optional) Set X.M.P. Memory Profile to Profile1
    4. If your CPU supports VT-d, disable it
    5. Save and exit.

    For best results with the latest 8-series motherboards and Haswell CPUs, remove all but 1 stick of RAM for the installation process. You can put back extra RAM sticks after post-installation is finished.
    STEP 4: Install OS X Mavericks

    You're almost done! All you need to do is boot from the USB drive and install!

    1. Turn on the computer
    2. Press the hotkey to choose boot device

    • If you have a Gigabyte motherboard press F12
    • If you have a ASUS motherboard, press F8

    3. Choose USB-HDD
    4. At the Chimera Boot Screen, choose USB and hit Enter

    If you have trouble reaching the installer, type -x at the Boot screen as shown below. You can type the boot flags GraphicsEnabler=Yes, maxmem=4096, PCIRootUID=1, PCIRootUID=0, and npci=0x2000 by themselves or together in order to solve boot issues for older graphics cards and machines. Type -v to bypass the Apple boot screen and enter verbose startup mode. For further explanations of boot flags, check out the post here. Also, if you need help with what to use for your graphics card, see the post here.

    5. When you arrive at the Installer, choose language.

    6. For a new installation of OS X, you MUST erase and format the destination drive according to the following steps before continuing. If you are upgrading from Snow Leopard, Lion, or Mountain Lion and you want to keep your files and apps, skip steps a-j.
    a. In the top menu bar choose Utilities, and open Disk Utility

    b. Highlight your target hard drive for the Mavericks installation in left column.
    c. Click Partition tab
    d. Click Current and choose 1 Partition
    e. Click Options...
    f. Choose GUID Partition Method
    g. Under Name: type Mavericks (You can rename it later)
    h. Under Format: choose Mac OS Extended (Journaled)
    i. Click Apply then Partition
    j. Close Disk Utility

    7. When the installer asks you where to install, choose Mavericks, or your existing install.
    8. Upon completion, restart the system.

    STEP 5: Post-Installation Using MultiBeast

    MultiBeast is an all-in-one post-installation tool designed to enable boot from hard drive, and install support for Audio, Network, and Graphics. In addition it includes System Utilities to repair permissions and a collection of drivers and config files. The installation is complete, but the drive isn't bootable yet. Boot from the USB again, this time choosing Mavericks.

    1. Turn on the computer
    2. Press the hotkey to choose boot device

    • If you have a Gigabyte motherboard press F12
    • If you have a ASUS motherboard, press F8

    3. Choose USB-HDD
    4. At the Chimera Boot Screen, choose your new Mavericks installation.

    5. Complete Mac OS X Mavericks setup
    6. Open and run Multibeast

    7. Click Quick Start to choose EasyBeast, UserDSDT, or DSDT-Free

    8. Click Drivers for Audio, Graphics, and Network options

    9. Click Customize for further options

    10. Click Print or Save to back up your configuration
    11. Click Build then Install

    12. Restart computer to complete installation

    Yay! You now have a fully updated bootable version of OS X Mavericks on your CustoMac! And a super handy USB rescue drive. It's easy to get frustrated, but don't give up! If you get stuck, there are many users with similar hardware in the tonymacx86 Forum to provide support. Special thanks to everyone in the community, and our moderators for testing!

    If you've had success using this guide, consider a contribution to help keep the sites going. We're constantly updating and tweaking our tools to help you. Good luck and have fun!

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    Last edited by adamsmasher; 12-30-2014 at 06:11 PM.

    Join Date
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    wow !!!

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    theshiv is offline
    When Mountain Lion came out, the 68XX cards were having serious issues. If your CPU didn't have internal graphics you had to swap in a different graphics card. Anyone know if that's still the case?

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    toXel is offline
    That was fast O.o

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    Nice. I will do the update method and report any issues.

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    Wow this looks awesome guys great job!

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    pcarrega is offline
    Great, does it work with I7 4930k. Does the kernel needs to be patched?

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    Duveltje is offline
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    I'm Downloading maverick from the app store at the moment.
    I'm trying to install maverick on Asus N76.

    -Thanks for making my life much easier ! =D

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    Article: UniBeast: Install OS X Mavericks on Any Supported Intel-based PC

    Will this work okay with a custom Fusion Drive?

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    Win 8.1 / Mac 10.9.2
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    basasa is offline
    Windows Phone Mac Pro
    wht about probook 4540s

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