Apple

On Nov 1, 2010, at 12:18 AM, kiran kumar wrote:

Hi All,
The 64-bit kernel cannot load 32-bit kernel extensions,but we can load 32-bit kernel extension in 64-bit kernel.

The rule here is very simple: the architecture of a kernel extension must match the architecture of the running kernel. In other words, you must use a 32-bit kext for a 32-bit kernel, and a 64-bit kext for a 64-bit kernel. You cannot use a 32-bit kernel extension in a 64-bit kernel.

now i unable to load 32-bit kext in 64 bit any reason and what wrong i am doing.

Check your project build settings and make sure that the "Architectures" setting is "Standard (32/64-bit) Universal". See this document for more information: http://developer.apple.com/library/mac/#documentation/Darwin/Conceptual/64bitPorting/KernelExtensionsandDrivers/KernelExtensionsandDrivers.html#//apple_ref/doc/uid/TP40001064-CH227-SW1

-Andrew

References:
	>Unable to load kext in 64-bit machine (From: kiran kumar <email@hidden>)