If your Hackintosh is taking 10-20 seconds to get past the "Loading Operating System" screen every time it boots, there's an easy solution to your problem: adjust your boot priority. Hackintoshes have to use AHCI mode for their BIOS, but AHCI mode wastes a lot of time searching for extra boot devices, like DVDs or USB drives. If you're just trying to boot from your Hackintosh's hard disk, setting the hard disk at the top boot priority can speed up your boot time noticeably.
First, enter the BIOS of your Hackintosh. To enter the BIOS on Gigabyte motherboards, press the delete key when it boots (before the operating system starts). Different manufacturers set different keys for opening the BIOS. Next, find the option in the BIOS for setting boot priority. On Gigabyte motherboards, this is located under "Advanced BIOS Features".
Set "Hard Disk" as the first boot device. Keep in mind that the BIOS on most motherboards do not support using a mouse, so you'll have to navigate through the BIOS with the arrow keys on your keyboard. Press "Enter" to change a selected option in the BIOS.
Save your changes by pressing the F10 key. And that's all there is to it! Your Hackintosh's BIOS should now detect your hard disk immediately, so it won't waste any time on the "Loading Operating System" page searching for extra boot devices.
This problem is caused because the standard
iBoot and
Unibeast methods for installing Mac OS X require you to set your first boot device to CD/DVD, or USB. When I changed back my first boot device back to Hard Disk, it cut my boot time by nearly 20 seconds. Some people might have had the foresight to change back their boot priority after installing Mac OS X, but if you forgot like me, it's a simple fix.
