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Boot hang at SMC successfully Initialized

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I have recently installed OS X Mavericks 10.9.3 on my computer, and everything works great while I'm INSIDE the OS using it. But when it comes to booting up, the screen keeps getting stuck at the grey apple logo screen, with the loading circle infinitely looping until I reboot, only to get the same results over and over. Using verbose mode revealed that the boot process gets stuck at the line "SMC : Successfully Initialized" as shown in the screenshot followed by one or two lines of uninterpretable garbage, until I reboot. 
 
So far I have tried infinite combinations of kernel flags, but all give the same results (except -x, which boots up OS X but then there's no graphics kext enabled). I tried changing the system definition from "Mac pro 6,1" to 5,1 and even 3,1. But still the same results. 
 
Also as an exception, the OS boots successfully if I use "UseKernelCache=No" flag, but then the OS behaves very abnormally and becomes extremely slow, so I avoid that. Even tried deleting and rebuilding kernel cache but problem still persists.
 
Sometimes with some real good luck it boots succesfully, but that's pretty rare and obviously unreliable.
 
Can anybody please help me on this one? This is real confusing.concern.png
 
Thanks

System Specs : 
X-Pro 450W PSU
​Galaxy Geforce GT 520 1GB
Gigabyte GA-G41 Combo 
Pentium Dual Core E5500 @4.1 GHz
6 GB (2+4) DDR3
128 GB Toshiba SSD (Boot Drive)
500 GB Seagate Barracuda HDD
LG Supermulti DVD-RW
 

post-1363577-0-82939200-1405629095_thumb.jpg

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hello

 

u have rtc problems

 

is that kext giving problems

 

must patch the dsdt or if use clover enable that key to true

 

good hack

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hello

 

u have rtc problems

 

is that kext giving problems

 

must patch the dsdt or if use clover enable that key to true

 

good hack

 

Definitely check the BIOS setting for the internal graphics. I think the default is "Auto" and this can cause Mac OS 10.8 to hang during boot. Setting the BIOS internal graphics to "ENABLED" or "DISABLED" will fix this.

 

Configure BIOS: http://olarila.com/forum/viewtopic.php?f=2&t=1804

Thankyou for the quick response guys :) 

 

The BIOS setting was already set to "PCI-e graphics"

 

So I tried patching the AppleRTC kext and also installed FakeSMC v5.3.820 and it's plugins, with multib**st, and it solved the booting problem! The OS boots fine now without hanging, but I am facing another problem, after booting successfully, about 30 seconds later the computer just freezes while I'm using it, until I reboot. I tried removing nullcpupowermanagement.kext but still the same problem occurs

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hello

 

boot 

 

-v

 

and when it crash should see msg why ..

 

if not check in console at that time possibles causes..

 

good hack

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Thankyou for the quick response guys :) 

 

The BIOS setting was already set to "PCI-e graphics"

 

So I tried patching the AppleRTC kext and also installed FakeSMC v5.3.820 and it's plugins, with multib**st, and it solved the booting problem! The OS boots fine now without hanging, but I am facing another problem, after booting successfully, about 30 seconds later the computer just freezes while I'm using it, until I reboot. I tried removing nullcpupowermanagement.kext but still the same problem occurs

There are two real problem:

1. FakeSMC v5.3.820

2.  multib**st

For the first problem I may propose you to check my signature.

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The problem has been solved! No more freezes, and fast boot time! Turns out it was the NullCpuPowermanagement kext causing problems. I guess it was interfering with the BIOS-controlled CPU speedstepping. So the problem was a faulty kext in my case. Also, patching the FakeSMC plugin to a newer version helped solving this problem! Thankyou for the help guys!  :)  :thumbsup_anim:

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