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AppleACPIPlatform.kext and IOPCIFamily.kext replace fix?


jriker1
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I have a Dell Precision M6400 laptop. The only way using a variety of suggested install methods including the sticky's in this forum have failed. I can only get to the install screen by replacing the AppleACPIPlatform.kext and IOPCIFamily.kext files with the ones from my 10.6.7 install that I am "upgrading" to Lion. Problem is it then installs and reboots, and get the spinning icon and then immediately crashes with:

 

 

 

Can't load kext com.apple.iokit.IOPCIFamily - link failed

 

Has a bunch others I can send but don't have it in front of me. Looking at a blurry photo I took of the screen. Also mentions:

 

 

 

Couldn't alloc class "AppleACPIPlatformExpert" Unable to find driver for this platform: \"ACPI\",\n"@/Source......

 

Anyone else having this incompatibility with replacing those two files? Again, gets the install done but then on reboot chokes.

 

Thanks.

 

JR

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OK, at the machine now after 2 more failed attempts doing various things. Here is the exact message hand typed after starting the newly installed Lion:

 

 

 

Darwin Kernel Version 11.0.0 .....

 

vm_page_bootstrap: 2022714 free pages and 58054 wired pages

 

kext submap ......

 

kxld[com.apple.iokit.IOPCIFamily]: The following symbols are unresolved for this kext:

 

kxld[com.apple.iokit.IOPCIFamily]: _cpuid_info

 

Can't load kext com.apple.iokit.IOPCIFamily - link failed.

 

Failed to load executable for kext com.apple.iokit.IOPCIFamily.

 

Kext com.apple.iokit.IOPCIFamily failed to load (0xdc008016).

 

Dependency com.apple.iokit.IOPCIFamily of kext com.apple.driver.AppleACPIPlatform failed to load.

 

Kext com.apple.driver.AppleACPIPlatform failed to load (0xdc008015)

 

Failed to load kext com.apple.driver.AppleACPIPlatform (error 0xdc008015).

 

Couldn't alloc class "AppleACPIPlatformExpert"

 

panic(cpu 0 caller 0xffffff800006489eb): "Unable to find driver for this platform: \"ACPI\".\n"@/SourceCache/xnu/xnu-1699.22.73/iokit/Kernel/IOPlatformExpert.cpp:1504

 

Debugger called: <panic>

 

Backtrace (CPU 0, Frame : Return Address

 

0xfffff80e8c13dd0 : 0xfffff80000220702

 

0xfffff80e8c13e50 : 0xff

 

and this above displays more debug codes then:

 

BSD process name corresponding to current thread: Unknown

 

 

 

Mac OS version:

 

Not yet set

 

 

 

Kernel version:

 

Darwin Kernel Version 11.0: ....

 

 

 

 

 

And then it sits.

 

 

 

I've cleared the cache in the install partition, tried a couple versions of the kext files but no joy.

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  • 1 month later...

Hi Jriker,

 

I am getting the exact same error on my Precision M4300, did you ever manage to fix this? Have tried so many different install methods its getting silly! Any advice on getting a working Lion install would be great...! Many thanks,

 

Cork.

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  • 1 month later...
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