Hi,

I had everything running perfectly but just needed to get XCode installed for development work. Downloaded the free Xcode from Mac App Store and during the install, it crashed the OSX. There was nothing I could do at that point but reboot and try again. Unfortunately, whatever XCode was installing, it affected some files since the following occurs during boot.

Code:

...
kxld[com.apple.driver.AppleRTC]: The Mach-O file is malformed: Invalid magic number: 0xbebafeca.
Can't load kext com.apple.driver.AppleRTC - link failed.
Failed to load executable for kext com.apple.driver.AppleRTC
Kext com.apple.driver.AppleRTC failed to load (0xdc008016)
Couldn't alloc class "AppleRTC"
...

There are also couple of other kexts not found like:

AppleHDACOntroller
NVDAResman
Geforce
NVKernel

and this error too, repeated twice

Code:

** AppleSMBusPCI::start failed to get acpi path for provider

The last line of the boot log is

Code:

USBMSC Identifier (non-unique): 575845393038584E46383234 0x1058 0x704 0x105

and then nothing.

I tried the usual -v -F -x -s and other boot flags with no help. I'm going to try booting from an install USB and see if it's possible to login at least to run some sort of a repair or reinstall the corrupted kexts. If anyone had similar issues, did you manage to fix and how?

thanks

It's been a while now, but I'm wondering if you ever got past these problems because I'm getting the same errors now. I've found that booting from the USB installer then using Disk Utility to Repair Disk Permissions will let me boot normally into the system - but that only works one time then it's back to the errors.

Would be most thankful for any help you might have. Thanks.

Asus p5W dh deluxe
Q6600
GeForce GT 240