STEP 1: Purchase Mac OS X Lion

The operating system is not free. There are two ways to purchase your copy of Mac OS X Lion. The simplest way is to download the Application from the Mac App Store. Alternately, the OS X Lion USB Thumb is available online at Apple.com or any Apple Store retail location.

STEP 2: Create a Bootable USB Drive Using 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 USB drive

2. Open /Applications/Utilities/Disk Utility

3. Highlight USB drive in left column

4. Click 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. If using the Install Mac OS X Lion Application, it must be in /Applications folder.

12. If using the Mac OS X Lion USB Thumb Drive, make sure it's plugged in and mounted.

UniBeast 13. Download and run

14. Click Continue, Continue, Continue, Agree

15. At Destination Select, choose USB and click Continue

16. If using the Mac App Store "Install Mac OS X Lion" App choose that option.

17. If using the Apple Store "OS X Lion USB Thumb Drive" choose that option.

18. If using a laptop, choose Laptop Support in addition to one of the above options.

19. Click Continue

20. Enter password and click Install





The process will take about 10-15 minutes, depending on system and drive speed, but will show hours. Do not unplug or stop during this time.





STEP 3: Install Mac OS X Lion

You're almost done! All you need to do is boot from the USB drive and install! Your hard drive should be set in BIOS to AHCI mode. For recommended BIOS settings and screenshots, check out iBoot + MultiBeast.





1. If you have a Gigabyte motherboard press F12 to choose boot device.









2. Choose USB-HDD

3. At Chimera Boot Screen, choose USB

You may have to type extra command line flags to reach the installer.

Asus Motherboard + NVIDIA Graphics - type PCIRootUID=0

Unsupported graphics - type GraphicsEnabler=No

Boot in Single-user mode - type -s

Boot in Verbose mode - type -v

Boot in Safe mode - type -x

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





If updating an existing Snow Leopard install, skip 5-14.





5. In the top menubar choose Utilities, and open Disk Utility

6. Highlight your target hard drive for the Lion installation in left column.

7. Click Partition tab

8. Click Current and choose 1 Partition

9. Click Options...

10. Choose GUID Partition Method

11. Under Name: type Lion (You can rename it later)

12. Under Format: choose Mac OS Extended (Journaled)

13. Click Apply then Partition





17. If you have a Gigabyte motherboard, press F12 to choose boot device.

18. Choose USB-HDD

19. At Chimera Boot Screen, choose your new Lion installation.









STEP 4: Post-Installation Using MultiBeast



The above photo will provide general post-installation support for any recommended CustoMac build

14. Close15. When the installer asks you where to install, chooseor your existing install16. Upon completion, restart systemThe installation is complete, but the drive isn't bootable yet. Boot from the USB again, this time choosing Lion.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, bootloaders, config files and handy software.1. Complete Mac OS X Lion setup.2. When you arrive at desktop, open3. Browse to tonymacx86.com and log in. If you don't have a user account, create one!4. Go to tonymacx86.com/downloads to download the latest5. Go to the DSDT Database to download your motherboard's DSDT6. Openfolder and move the .aml file to the7. Open and run8. Restart systemIf your drive doesn't boot on its own, and you get an error referencing, fix it using the methods listed here You may also use MultiBeast to install further drivers to enable ethernet, sound, graphics, etc... Be sure to read the documentation provided in MultiBeast Features.pdf about each option. Both UserDSDT and EasyBeast install the proper bootloader by default, so you'll not need to check that option.