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IOUSBFamily was not able to enumerate a device

Joined
Oct 9, 2012
Messages
7
Motherboard
osx
CPU
intel
Graphics
nvidia
Mac
Classic Mac
Mobile Phone
Hi,

I have some problem with installing ML on my PC.

Specs:

G550
AsRock P67 Pro3 B3
2x2GB Corsair RAM
Seagate 250GB

I am using USB drive made with Unibeast.

At the beginning of installation I have an error that "IOUSBFamily was not able to enumerate a device". I was trying do it with "the most popular" flags, also in safe mode, but it did not help.

Could I ask someone to help?
 
Joined
Oct 29, 2012
Messages
7
Motherboard
MSI Z77MA-G45
CPU
i5-3570K
Graphics
HIS 6870
Mac
  1. MacBook
Classic Mac
Mobile Phone
I'm having the same problem on my MSI Z77MA-G45.
 
Joined
Oct 29, 2012
Messages
7
Motherboard
MSI Z77MA-G45
CPU
i5-3570K
Graphics
HIS 6870
Mac
  1. MacBook
Classic Mac
Mobile Phone
D'oh! Just found USBBusFix=Yes and it did the trick... so far. Got me into ML setup.

Danyboy, what does npci=0x2000 do? And thanks.
 
Joined
Sep 26, 2012
Messages
27
Motherboard
Gigabyte GA-Z77X-UD5-TH
CPU
Intel Core i7 3770K
Graphics
Gigabyte GTX 670 OC
Mac
  1. MacBook Pro
Classic Mac
  1. eMac
Mobile Phone
  1. Android
Having the same issue.. Here is a shot from verbos mode

-v -x flags set

The ports seems to always be the same one I plug my USB drive into for the install.

Also noticed that it was reporting that my USB 3.0 hub wasn't getting any power... even though I can plug the flash drive into it and get to the chimera boot screen.

Ideas?
 

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Joined
Oct 29, 2012
Messages
7
Motherboard
MSI Z77MA-G45
CPU
i5-3570K
Graphics
HIS 6870
Mac
  1. MacBook
Classic Mac
Mobile Phone
So "USBBusFix=Yes" worked for me about twice and then I couldn't get UniBeast to boot no matter what I tried. It just kept getting stuck trying to enumerate a device. I moved my keyboard and flash drive to different ports and figure out the problem was with the drive.

I installed UniBeast on an SD card and reader and it worked a treat. I'd been using that flash drive for years without any problems, even up to transferring files around early in the install process. I even booted into ML from the drive a couple times but my system just decided it didn't like it for whatever reason.

Try installing UniBeast on a different drive. I'm going out today and getting an 8GB drive to keep as my permanent UniBeast install drive.

Good luck!
 
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