Opcode Artisan: How to Triple boot MacOSX Mountain Lion, Windows 7, and Ubuntu

Triple boot

MAC Mountain Lion, Windows 7, and Ubuntu 12.04

Ok.

I need to write this tutorial while it’s still fresh in my mind. I’m very happy that once again after days of hard work, I finally succeeded this challenge. To boot three (3) different operating system is too hard, aside they aren’t play nice with each other you must also consider some hardware issues.
I almost got crazy doing it over and over again. Why? Because it is fun to prove theories. And I need it in my everyday life as IT Professional. And the best of all, it is worth it when you finally succeeded.

To end this introduction, let me now start the tutorial.

Ingredients:

Intel I7, Gigabyte Mobo, 8gig RAM, GeForce 7500GT, and 1TB WD HDD
Downloaded MAC OSX ML Virtual Virtual Machine(VM)
USB Flash Drive 8gb
Unibeast, Multibeast, Kextwizard, Secrets, and boot0
Buy and download Install OS X Mountain Lion from Apple
Ubuntu 12.04 (CD Installer)
Buy Windows 7 64bit (DVD Installer)
Cup of coffee
Patience

Steps:

On mobo's BIOS go to SATA Control Mode change it to "AHCI"
Change HPET mode to 64-bit mode
Prepare your Windows PC (I assume)
Run downloaded MAC OSX (VM) with Virtual Box
Copy Install OS X Mountain Lion inside the Applications folder
Insert 8gb USB flash drive and mount it on your running Mac OSX VM
Format 8gb USB flash drive use Mac OS Extended (Journaled) name it OSXInstaller
Download and Run Unibeast (Inside Mac OSX Virtual Machine!)
Choose the 8gb USB flash drive, Click Next…
Then wait for a minute. Click Finish when it’s done
Now you have successfully created a bootable USB Mac OSX Mountain Lion!
Now restart the PC and set the USB as first boot device in Mobo’s BIOS
Save and Restart PC
In the Unibeast boot menu, Select OSXInstaller
Wait until the language selection in MAC OSX Installation shows up
Go to Disk Utility and Set 4 Partition, Set GUID Partition Table in partition option
MAC(200gig) "Mac OSX (Extended Journaled)"- To be use as my main OS
Windows(80gig) "MS-DOS FAT32"- To be use as my auxiliary OS
Data(700gig) "MS-DOS FAT32" - To be use as storage for all files
Linux(20gig) "MS-DOS FAT32" - To be use as my auxiliary OS
After partitioning, Install MAC OSX Mountain Lion into MAC Partition
Zip a cup of coffee
After Mac OSX Installation, it will restart automatically and boot into Unibeast again
Select MAC Operating System you installed, then set your preferences and profiles
Next, log in as root
In Finder Preferences tick Hard disk. External disk, and CDs, DVDs, and iPods
Extract Secrets.zip and use Secrets to show hidden files
Copy boot file and Extra folder from Unibeast(USB) to MacOSX Partition
Run Multibeast. In Drivers & Bootloaders, select Chimera v2 under Bootloaders
Then click continue to install Chimera v2.
When its done, run Kext Wizard. Select Extra(Repair permissions and Rebuid mkext)
And System/Library/Extensions(Repair permissions) dont select Rebuild cache. Then click Execute
Eject Unibeast(USB), and reboot MacOSX. Then go to mobo's BIOS
Check if your 1TB WD HDD is set to boot first. When you proceed to boot the HDD
Then it will shows boot0: GPT test error. Because we are using 1TB HDD, a.k.a 4k drives
So you need too boot Unibeast(USB) again. Select OSXInstaller
In Disk Utility, unmount MacOSX Partition. Then go to Terminal(Still in Mac Installation)
Then do this command. (But if you have 500gb HDD below you don't need to do this)
Exit Terminal and reboot
Go to mobo's BIOS and set 1TB WD HDD as first boot device
Now you shouldn't see that error again and it must boot into Unibeast boot Menu without USB
Since we have successfully booting MacOSX. Now its time to install Windows 7 64bit
Go to mobo's BIOS and set CD/DVD as first boot device
Insert and install Windows 7 to its Partition. Set your preferences and profiles
In Windos 7, go to Disk Management, Quick Format Data partition. Use NTFS
Restart windows. Insert Ubuntu 12.04 CD Installer, select Install Ubuntu
Install Ubuntu in Linux partition, Install boot loader in /dev/sda (Not in Ubuntu partition)
After Ubuntu installation. login as root
Copy boot0 inside Ubuntu root folder (/)
Edit grub, gedit /boot/grub/grub.cfg
Goto terminal and "apt-get install gptsync" (without quotes)
Next, align partition by entering "gptsync /dev/sda", then type "y" to proceed (without quotes)
Reboot Ubuntu. it should boot into Grub menu
Test if all Operating Systems are working, If you need to use MacOSX just select Chimera
All done. Enjoy your triple boot Operating System...