Updating os x 10 10
Reformat your USB drive with Disk Utility and try again.
If all else fails, try using a different USB drive for Unibeast.
Click the "Options" button, and check the partition scheme: it should be set to "Master Boot Record" by default.
Multibeast is a collection of kext files that you'll need to install for your Hackintoshes to have sound, internet, a high resolution screen, and more.
On Gigabyte motherboards, you can reset your BIOS settings to their default by selecting "Load Optimized Defaults" on the main page of the BIOS.
Once your BIOS is running on its defaults, you need to change these three settings: Boot Device - Change the boot device of your computer so that "USB-HDD" is first. After you finish installing Mac OS X, you should change this setting back to default, so that "Hard Disk" is the first boot device (this optional, but it will speed up your boot times).
You'll have to erase that hard drive with Disk Utility first (check out Step 4 of our Snow Leopard installation guide for more details). Select it (use the arrow keys on your computer) and press "Enter".
Otherwise, select the hard drive you want to install OS X Mavericks on, and click "Install". Once again, if you get a kernel panic/loading error when you try to boot your new Mavericks installation (or if the installation simply won't start within 10 minutes), you'll need to enter some boot flags.