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Okay, I believe I found it! NullCPUPowerManagement.kext Installed this kext on my system drive and now there are no more lockups. This is yet one more reason I would prefer to have a DSDT, but even with the guides I have read, I'm still lost on how to make one.

Thanks! I ended up convincing my lazy butt to Google it and found the same info. :) Unfortunately, I am having more problems now after trying to move over some of the now un-hidden files to my boot drive. I am going to just start from scratch again and take it one item at a time.

Well, if no one can pinpoint the problem, can someone at least let me know how I can access the hidden files on the Unibeast USB installer? I realize this is just a Mac OS X question. Perhaps I just need to open a terminal window and navigate to the drive?

No ideas on this, eh? There's gotta be something on the USB boot drive.....

I'm getting much closer to a working system now. The biggest change I made a while back was to go with the nVidia GT 740 card. This gave me compatibility and performance at a reasonable price. Even more recently, I changed to E5450 CPUs due to their lower power consumption. The X5450s just...

And the answer is......YES. You just need the GenericUSBXHCi.kext

Has anyone tried this card: http://www.amazon.com/ORICO-PVU3-2O2I-Express-Internal-Connector/dp/B008717L0G/ref=sr_1_2?s=electronics&ie=UTF8&qid=1435535568&sr=1-2&keywords=ORICO+usb+3.0+pci+20+pin in Yosemite or Mavericks?

I too picked up one of the ASMedia 1061 cards. It must have been DOA but I did not realize that until later (after the point of no return). I experienced really slow performance and system freezing even on the Windows side. It is in the correct slot and I'm using 6Gbps SATA cables. Just got a...

I picked up the GT 740 SC 2GB. I had already planned a reinstall of Mavericks due to a damaged file system, so the new card was installed during the OS reload. I got through the installer process just fine and at no point did I need to use GraphicsEnabler=Yes to boot. I avoided Multibeast this...

This card works in my system but the drivers are not optimized. Windows 7 on the same machine has much better driver support (not surprisingly). Unfortunately, I do not believe nvidia has enhanced drivers for this card for Mac OS X.

My Quadro 2000 in Mavericks is mostly good but I am getting less than half of the Cinebench scores in Mac OS X vs Windows 7 installed on the same machine. 28fps vs 48fps in Windows. Unfortunately, there does not appear to be optimized drivers for the 2000. I even tried installing this driver...

Correction, my experience is becoming very much like the original posters, but it only happened after I applied some of the Multibeast additions. Namely, FakeSMC + Hardware monitor, 3rd Party SATA and Intel SATA, Mac Pro 3,1 SMBIOS, Basic Boot, and Chimera. Prior to that, I was booting from...

My experience with Yosemite and the xw8600 is somewhat different than the original posters. First, where in BIOS did you "enable DEP and disable VT-d and VT-x" ? I do not seem to have these options unless they are described differently. My BIOS is v1.46 (latest). So, for me, the installer loads...

Hi trevorw. Well I see you only have one post in this forum so I do know how often you will be checking back. I too have an xw8600 with Quadro 2000 but cannot get it to boot Mavericks unless in safe mode. Can you tell me more about your system specs? I have Dual 3.0GHz Xeon X5450 processors...

EDIT: Silly me, I was trying to get this to work in ML when you said it was for Mavericks. :) ~~~~~ Strange. That didn't work for me. I see "Intel High Definition Audio" showing up in the System Report, but there is no audio output device listed in the System Preferences. I used the -f boot...

Hi Benjudas! You may recognize me from another forum. :) I will try your audio kext with Mountain Lion even though I am now trying to (unsuccessfully) get Mavericks working on the xw8600.

*Apologies to the moderator. Just realized I posted about the same hardware, but in the Snow Leopard section of the forum. No problem if it needs to move.* ~~~~~~~ Thank you for posting the Broadcom kext above. Do you know where I can get the integrated audio from? Funny thing is HP's own...