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Yosemite install trouble: IOUSBMassStorageClass

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Jul 25, 2010
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Motherboard
ga-p55a-ud3 rev 1
CPU
i5-760
Graphics
evga geforce 9800 gtx+ 512mb
Mac
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Classic Mac
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Hi,

I'm having trouble booting up with a new Yosemite upgrade. My Mavericks install was working perfectly.

During boot, from either my HDD or my UniBeast USB, the computer is stalling at:

Code:
IOUSBMassStorageClass[0xffffff801747e00]: The device is still unresponsive after 6 consecutive USB Device Resets: it will be terminated.
[0xffffff8017f7e00](6)/(5) Device not responding

I tried leaving it for a couple hours and it would not progress past this point. I *can* boot in safe mode (-x), but this is a fairly terrible experience.

Any help would be appreciated.
 

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I got everything working by deleting the GenericUSBXHCI kext.
 
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