E6410 with nVidia NVS 3100M graphics - Mountain Lion Guide

[Hervé]

I'm quite surprised you mention Extensions.mkext as that was last seen on Leopard or Snow Leopard as far as I know. Unless I'm massively mistaken, that is no longer used in Lion or ML. Your cache can be found in /System/Library/Cache/com.apple.kext.caches/Startup.

 

You would normally see files of the following sort:

pc20:Startup admin$ ls -l
total 21464
-rw-r--r--  1 root  wheel     81911 Sep 19 22:46 IOKitPersonalities_i386.ioplist.gz
-rw-r--r--  1 root  wheel        41 Sep 19 22:46 KextPropertyValues_OSBundleHelper_i386.plist.gz
-rw-r--r--  1 root  wheel  10902476 Sep 19 22:46 kernel cache

You can manually rebuild your cache with the kextcache CLI command. For instance:

sudo touch /System/Libraries/Extensions
sudo kextcache -system-prelinked-kernel

[TheRealBigBudz]

I have the file you are specifying, which surprises me -- the error in Chameleon says that /System/Library/Cache/com.apple.kext.caches/Startup/KernelCache is not found.  

[Bronxteck]

it probably did not generate one. you have to look in E/E and see if there is a similar named kext already existing in s/l/e if so back it up and remove it then do a my fix.

[Hervé]

Try to delete the cache and manually re-create it.

[Bronxteck]

you can also do a sudo touch System/Library/Extensions and watch console to see if it's generating

[TheRealBigBudz]

No output from console when I use that command.

 

Also moving the E/E directory gave me a KP.  I used Myfix to get back into the desktop but now there is no wifi.  Going to myfix again and reboot, and may have to put that Extra/Extensions back into place.

 

How do I manually delete and recreate the file?  I have tried trashing the whole startup folder but it still does not make the file that chameleon is looking for.

 

Edit: Didn't realize the CLI command was given in a post at the top of the page -- trying that now.

[TheRealBigBudz]

Ok this is what I get for output when using:

 

sudo touch /System/Library/Extension

sudo kextcache -system-prelinked-kernel

 

 

 

Last login: Thu Sep 19 19:43:41 on console

ldv-mpc:~ LDV$ sudo touch /System/Library/Extensions/

Password:

ldv-mpc:~ LDV$ sudo kextcache -system-prelinked-kernel

Kernel file /mach_kernel does not contain requested arch: i386

2013-09-19 19:45:40.580 kextcache[253:a07] -[__NSCFData _fastCStringContents:]: unrecognized selector sent to instance 0x7fa133950920

2013-09-19 19:45:40.583 kextcache[253:a07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFData _fastCStringContents:]: unrecognized selector sent to instance 0x7fa133950920'

*** First throw call stack:

(

0   CoreFoundation                      0x0000000103a1eb06 __exceptionPreprocess + 198

1   libobjc.A.dylib                     0x000000010404b3f0 objc_exception_throw + 43

2   CoreFoundation                      0x0000000103ab540a -[NSObject(NSObject) doesNotRecognizeSelector:] + 186

3   CoreFoundation                      0x0000000103a0d02e ___forwarding___ + 414

4   CoreFoundation                      0x0000000103a0ce18 _CF_forwarding_prep_0 + 232

5   CoreFoundation                      0x00000001039a37cd CFStringFindWithOptionsAndLocale + 541

6   CoreFoundation                      0x00000001039ad092 CFStringFind + 178

7   kextcache                           0x000000010355fc98 kextcache + 89240

8   kextcache                           0x000000010355f32b kextcache + 86827

9   kextcache                           0x000000010354dcef kextcache + 15599

10  kextcache                           0x000000010354e41c kextcache + 17436

11  kextcache                           0x000000010354cdfe kextcache + 11774

12  kextcache                           0x000000010354b48a kextcache + 5258

13  libdyld.dylib                       0x000000010449a7e1 start + 0

)

libc++abi.dylib: terminate called throwing an exception

ldv-mpc:~ LDV$ 

 

 

[TheRealBigBudz]

Also why is it requesting i386?  Shouldn't ML system be 64-bit?

[Bronxteck]

well mixing my hack and kw can lead to issues. if kw is kext wizard it puts things in s/l/e directly where as my hack uses a kext to inject into s/l/e you might have double kexts. you have to choose one of the methods and stick to it. then look for double kexts. if you need to use an older kext that has the same name in s/l/e then you have to either remove the one you do not wish to use or replace it.

[Hervé]

Is Kext Wizard actually compatible with Lion and ML in the way it actually handles cache? I've never used it since switching to myHack to avoid conflicts like Mario said.