Multibeast, is a essentially an installer bundled with a lot of kext files for Hackintoshes. When you're setting up Mac OS X, it can be a huge time saver. By using Multibeast, you don't have to find, download, and install every single kext file that your Hackintosh needs, one by one. Multibeast has it all. However, the problem with Multibeast's all-in-one method is that there are simply too many options to make sense of. In this guide, I'm going to explain the function of several important options in Multibeast.

NOTE: You have to register on to download Multibeast and related apps. After installing anything in Multibeast, you should reboot your Hackintosh to see if the changes worked.

Easybeast/UserDSDT/DSDT-Free Installation
These options are the cornerstone of the tonymacx86 method; installing either of these two packages will enable Mac OS X to boot from the hard drive of your Hackintosh, without any extra assistance.

UserDSDT or DSDT-Free Installation is the better method of the two. Usually, it only works if your motherboard has a DSDT file available. DSDT files are configuration files that customize Mac OS X to work with your specific motherboard. If your motherboard has a DSDT file available in the DSDT section of tonymacx86, use it. To install UserDSDT on Mac OS X this way, you first have to download the appropriate DSDT file, rename the file "DSDT.aml" (without quotation marks), and place it on the desktop of Mac OS X. Then you can run Multibeast.

When installing UserDSDT with a DSDT file, make sure that your motherboard has the right BIOS version, or the DSDT file won't work. For example, a DSDT file for version F4 won't work if your motherboard has version F1. 

However, if you have a newer Gigabyte motherboard that uses UEFI instead of BIOS, you don't need a DSDT file. You can just install UserDSDT in Multibeast without doing anything else beforehand.

Easybeast Installation is similar to UserDSDT, except it tries to remove the need for a DSDT file by installing some extra kext files. If your motherboard doesn't have a DSDT file available for it and isn't a Gigabyte motherboard with UEFI, try installing Easybeast instead.

Drivers & Bootloaders -> Drivers -> Audio
All of the motherboards recommended by tonymacx86 use Realtek Audio. To enable sound on these motherboards, you'll want to install the Realtek ALC8xx kexts. Luckily, the Realtek ALC8xx section of Multibeast 5 is pretty straightforward.

All you need to know is the audio codec of your motherboard. You can find your audio codec by Googling the model of your motherboard. The first Google result will be the motherboard's official product page. The audio codec is usually found under the "Specifications" section, or some other similarly-named section. For example, my Hackintosh has a Gigabyte GA-P67A-D3-B3 motherboard. According to the official product page, this motherboard uses the Realtek 889 codec.

Once you've found your audio codec, choose the corresponding option in Multibeast. Each codec as two different possible setups: one for Hackintoshes that use a DSDT file, and one for Hackintoshes that don't. On my own Hackintosh, I used a DSDT file, so I would choose ALC889 under the "With DSDT" section to enable audio.

If you have a motherboard that doesn't use the Realtek audio codec (or it has an unsupported codec version), you'll have to go with the VoodooHDA kexts. VoodooHDA enables sound for a wide variety of motherboards, but it's not very reliable. Install just one of the versions and reboot to see if it works well for you. If not, remove the kext by going to /System/Library/Extensions in your hard drive and deleting VoodooHDA.kext. Then try another version.

Drivers & Bootloaders -> Drivers -> Disk
These kexts fix problems related to hard drives.

For example, on some Hackintoshes, your hard drives will show up as orange external drives on your desktop. Install IOAHCI Block Storage Injector to fix that (this kext should be unnecessary if you install UserDSDT).

You can also install TRIM Enabler to enable TRIM in Mac OS X, which is a critical feature for SSD drives.

Drivers & Bootloaders -> Drivers -> Graphics
The following graphics card patches are version-specific, meaning that you have to install a new patch every time you update to a new version of Mac OS X. All of these patches enable graphics support on NVIDIA graphics cards, so that the cards can display at full resolution.

The only difference between the patches are what cards are supported: NVIDIA GTX 4xx/5xx Support works for pretty much any graphics card in NVIDIA's 400 and 500 series (not just the models listed in the name), NVIDIA Fermi >2GB OpenCL Patch works for NVIDIA 400/500 series cards with 2 GB or more of video RAM, and NVIDIA GTX 6xx Support works for NVIDIA 600 series cards.

Generally, most older NVIDIA graphics cards work out of the box, without the need for extra drivers. This is also true for most AMD Radeon HD graphics cards, particularly the 6600, 6700, and 6800 series.

P.S. NVIDIA offers official graphics drivers for Mac OS X Lion, which should work for Mountain Lion as well, but most people simply use OpenCL Enabler nowadays. Never install both of these things at the same time; they conflict with each other and will break your graphics.

Drivers & Bootloaders -> Drivers->Miscellaneous/System
The Miscellaneous and System sections contain kexts that fix random issues in Mac OS X. In Multibeast 5, the difference between these two sections is very unclear, so I've included explanations for both sections.

NullCPUPowerManagement (NCPM) fixes boot errors caused by Apple's CPU power management service. These errors happen on Hackintoshes that aren't using UserDSDT. Installing NCPM breaks sleep mode and speed-stepping (CPU power management). This kext is installed by default when you run Easybeast.

The FakeSMC Plugins are a set of plugins that enable system-monitoring apps to read your Hackintosh's CPU temperature and GPU temperature. However, the NVIDIA GeForce Plugin causes kernel panics if your Hackintosh uses a graphics card from the NVIDIA 600 series.

Installing USB 3.0 - 3rd Party supposedly enables USB 3.0 support on Hackintoshes, but it's a hit-and-miss feature: it works for some people, and causes booting errors for others. So if you're setting up a Hackintosh, don't count on USB 3.0 support.

If you're using an older mouse or keyboard that doesn't connect to your Hackintosh with a USB port, install PS/2 Keyboard/Mice.

If your Hackintosh is having problems with booting because your BIOS settings keep resetting every time you reboot, try installingElliottForceLegacyRTC and EvOreboot. If you're experiencing this issue on Mac OS X Lion, install AppleRTC Patch for CMOS Reset. All of this stuff is installed by default in Easybeast, and AppleRTC Patch is installed by default in UserDSDT.

If your Hackintosh uses an older LGA1156 motherboard and the USB ports aren't working properly, try installing Legacy USB Support. LGA1156 motherboards are the ones that support the first generation of Intel Core processors.

Patched Apple Intel CPU Power Management is an alternative to NullCPUPowerManagement. It does the same thing as NCPM, except it doesn't break sleep mode or speed-stepping. However, these patches are version-specific, so every time you update Mac OS X, you'll have to install a new version of the patch.

Mac OS X Lion 10.7.4 removed support for X58 motherboards, making Hackintoshes that use these motherboards unable to boot without help in Mountain Lion, even after installing UserDSDT or Easybeast. AppleACPIPlatform Rollback fixes these booting problems.

Drivers & Bootloaders -> Kexts & Enablers -> Network
These kexts should enable connecting to the internet on your Hackintosh, via an Ethernet cord. To find out which kext you need to install, you need to know what ethernet controller your motherboard has.

Every mid-end to high-end Gigabyte motherboard that's supported by tonymacx86 has the 8100 series of controllers. However, different manufacturers use different controllers; for example, some ASUS motherboards also use the 8100 series, while other ASUS motherboards use the 82500 series. Check what controller your motherboard uses by Googling its name (or model number) to find the official manufacturer webpage for it. Most manufacturers list the ethernet controller of a motherboard under the "Specifications" section of its official page.

If your motherboard uses the Realtek 8100 series of Ethernet controllers, try installing the Realtek Gigabit Ethernet first. If not, try installing Lnx2Mac's driver, which works better for some people.

hnak's ethernet kext works on motherboards with an Intel 82500 series ethernet controller, and maolj's ethernet kext works on motherboards with an Atheros AR8100 series ethernet controller.

Customization -> Boot Options
Most of the options in the Boot Options section make edits to org.Chameleon.boot.plist, a settings file that configures how your Hackintosh boots. You can make all these changes manually. Check out our list of common boot options for more details.

If your Hackintosh isn't booting from the hard drive properly, or you're getting verifications errors in the Mac App Store, changing your PCI Root ID with PCI Root ID Fix may be able to solve the issue. This option does the same thing as using the PCIRootUID=1 boot flag.

If your Hackintosh's bootscreen automatically loads Mac OS X instead of giving you the option to choose your own hard drive, install Instant Menu.

Customization -> System Definitions
System Definitions pretend that your Hackintosh is a real Mac. The Mac Pro (3,1) system definition is installed by default with UserDSDT and Easybeast.

Occasionally, a certain System Definition will make your Hackintosh run a lot slower than it should. Geekbench is a good benchmark to compare your Hackintosh against other Hackintoshes and Macs (the free trial lasts forever). If you feel that your Geekbench score is unusually slow compared to Hackintoshes or Macs with similar hardware, try installing a different System Definition.

Generally, any system definition will work. The only exceptions are the the Mac Pro (4,1) and Mac Pro (5,1) system definitions, which cause booting problems. If you insist on installing either of these two system definitions, be sure to remove AppleTyMCEDriver.kext and AppleGraphicsPowerManagement.kext from /System/Library/Extensions beforehand (the system definitions mess up these two kexts).

If you need to enable the built-in HD3000 graphics of your Intel Sandy Bridge processor, then install the Mac mini system definition or the MacBook Pro 8,1.