OS X Mavericks No AHCI Fix, IDE support This should work for most Legacy computers with no AHCI support. I used it successfully with a Dell Optiplex 390 in IDE mode. (See attached) INSTRUCTIONS FOR NO AHCI FIX: 1. Install all Kexts to System/Library/Extensions of your UNIBEAST or OTHER INSTALL USB using Kext Wizard (HDD should now be available in the OS X installer) 2. Install OS X to the desired HDD 3.
Connect HDD that contains newly installed OS X partition to anther working Mac or Hackintosh computer. Boot into working Mac operating system 4. Install all Kexts to System/Library/Extensions of the HDD you recently installed OS X on using Kext Wizard 5. Reconnect your HDD to the computer that has no AHCI support and boot to your original UNIBEAST or OTHER installer and select the HDD that has the newly installed Kexts using a MINIMUM of boot flags: -v -f NOTE: For Dell Optiplex with Radeon HD6450 use GraphicsEnabler=No ATA / SATA drivers should now be available to boot.
AHCI vs ATA ATA (AT Attachment) is a standard that has been around for quite some time and was originally designed to create an interface between storage devices like hard drives and the CPU. Because ATA is very old, it has been improved a few times.
OSXLatitude Forum → Help and Support. I tested G33 mother board without AHCI mods. I succeeded they are same method to install OSX without network. I am using this same set up with a geforce 9800 gt. I'm using the legacy sata bios settings as I had a problem with the ide. I've got the main mac drive in sata slot.
There are two types of ATA, the first is Parallel ATA (PATA) and the second is Serial ATA (SATA); although the use of ATA often refers to the former as ATA and PATA are synonymous prior to the advent of SATA. On the other hand, AHCI (Advanced Host Controller Interface) is a host controller interface that was designed for SATA. It defines how is passed between the storage device and the host. As AHCI is relatively new, it is not compatible with the older ATA.
It is only possible to use AHCI with SATA enabled motherboards and hard drives. Ipod 30gb Model A1136 Manual Lymphatic Drainage on this page. Even when using SATA, users still have the option whether to use AHCI or the older PATA implementation.
This is meant to improve compatibility with older devices that have SATA controllers but cannot implement AHCI. If you already have a Windows installation with ATA selected, it is a bit difficult to switch to AHCI as your system may not have the correct drivers installed, leading to a blue screen of death. The easiest and most straightforward way of switching to AHCI is to do a fresh install of your operating system. Although it is easy, it still takes a long time and it may not be worth the time. AHCI is not without its advantages. It may not be worthwhile to go into the details of the specification but AHCI unlocks two features that you would not find on hard drives that use ATA. The first is hot-plugging or the ability to add/remove hard drives from the system without having to reboot your computer.