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HDD not detected in Disk Utility, AHCI enabled
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Hello guys,



I am facing a big problem. I managed to install Yosemite OS X 10.10.1 on my USB drive with TransMac. I want to have a dual boot with Windows 7 x64 SP1 and Yosemite. I already have Win7 installed. Ok. When I try to boot from USB it works, Darwin shows up DETECTING MY HDD... I select Yosemite Zone to boot, it boots, I choose the language, but the big problem comes now.

When I go to Disk Utility it doesn't detect my HDD... Only the USB stick and the DVD-RW. And I checked my BIOS setting and they are good :


AHCI - enabled

HPET? I don't have that

Executive Disable Bit - enabled

USB Legacy - enabled

VT technology - enabled

If UEFI available turn it off & Enable legacy Boot - I don't see that


My specs:


8GB RAM 1333mhz DDR3 dual channel

Nvidia GTX 560 SE

Intel core i3 2120

Gigabyte GA-H61MA-D3V

500GB Western Digital Caviar Blue KX HDD



Please note that I have a thing named Marvel ATA blah blah, and when I go to it, it has something named GSATA controller and it lists my HDD and says IDE, and i have the option to choose RAID and AHCI





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1 answer to this question

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Solution : I had SATA controller set to IDE, changed it to AHCI and it detects everything.

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