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I have seen and faced that system tries to load many not needed kext and sticks some where or throw CP.

Following is a rough guide to understand which kext does what and if you can delete them :

NOTE : BACKUP YOUR KEXT ALWAYS BEFORE DELETING

 

delete from /System/Library/Extentions/

 

If you have no Nvidia Card :

GeForce**.* & NVDA**.* NV40** is for Geforce 6xxx series.

 

If you have no ATI :

all ATI***.** , X2000 kext is for the HD series,

 

If you have no Intel GMA integrated graphics :

all AppleIntelGMA***.**

If you dont use RAID or SCSI cards (normal AHCI won't be effected ) :

ACard*.kext ( scsi cards ) , AppleRAID**-kext ( ability to use two hdds as one ) 

If you have no ipod touch/iphone/ Apple TV / other Apple mobile device:

Itunesphone**.ApplemobiledDevice** AppleIpod**

kexts with AppleRISC** , and AppleNVcore99** in name is powerpc only, useless on Intel installs. These kexts are in Leopard 10.5.x only as the last PPC OSX.

AppleCPUThermal/IntelCPUpowermanagement is not needed when you use Voodoopower.

LogitechForceFeedback and ImmersionForceFeedback are some sort of special game Joysticks, I have deleted them and my simple USB Joystick still works.

AFTER THIS MAKE CACHE AGAIN, BOOT WITH -v -f. IF YOU BOOT FINE THEN YOU DONT NEED THOSE kext.

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@ Nice guide ! But most people think of deleting kexts as a way of speeding up their computer or boot time. In fact deleting any kexts doesn't make any difference in boot time unless you always boot with UseKernelCache=No. So yes, readers, be informed about your actions. This guide will help beautifully to help you remove unwanted extensions. Great job Aman ! :)

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@Devonic,

Thanks, without you pro out there, it was not possible.

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