Introducing UniBeast- our new tool to create a bootable USB drive from your Mac App Store purchased copy of Install Mac OS X Lion or Apple Store purchased OS X Lion USB Thumb Drive. This all-in-one bootable USB drive can also be used as a rescue boot drive for system recovery.
UniBeast + MultiBeast is the easiest method to do a clean install of Mac OS X Lion or update any Snow Leopard system. The following guide requires no coding, terminal work, or Mac experience of any kind.
You Will Need
8GB or larger USB Drive

Install Mac OS X Lion Application
OR

STEP 1: Purchase Mac OS X LionThe 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 UniBeastTake 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
OS X Lion USB Thumb Drive, make sure it's plugged in and mounted.
13. Download and run
UniBeast 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
InstallThe 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 LionYou'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.
• AMD Radeon 6670 - 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 14. Close
Disk Utility
15. When the installer asks you where to install, choose Lion, or your existing install.
16. Upon completion, restart system
The installation is complete, but the drive isn't bootable yet. Boot from the USB again, this time choosing Lion.
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 MultiBeastMultiBeast 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 rebuild caches and 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, open
Safari 3. 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 latest
MultiBeast 5. Go to the
DSDT Database to download your motherboard's DSDT
6. Open
Downloadsfolder and move the .aml file to the
Desktop 7. Open and run
Multibeast's UserDSDT 8. Restart system
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.

You now have a fully updated bootable version of Mac OS X Lion on your [CustoMac! And a handy USB rescue drive to boot from in case things go pear-shaped. 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 Mods 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!