I have an iMac running OS X 10.6.8. The processor is a 2.8 GHz Intel Core i7 and the machine has 4 GB of RAM. How can I boot the computer in 64-bit mode (instead of 32-bit mode) so that I can upgrade to OS X 10.9 and run Final Cut Pro 10.3?
IMac – How to boot an Intel Core i7 iMac in 64-bit mode
64-bitimacmacos
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Best Answer
To start up with a special kernel check this from Apple: Starting up with the 32-bit or 64-bit kernel in 10.6 and later:
To determine your currently running kernel open
Terminal.app
and enter:uname -a
Running with the 64-bit kernel, the output will end with
RELEASE_X86_64 x86_64
. Running with the 32-bit kernel, the output will end withRELEASE_I386 i386
.In your case you just have to update to Mavericks (Mac OS X 10.9). Mavericks doesn't contain a 32-bit kernel anymore and since your i7-processor is 64-bit, everything just works right out of the box without key strokes or modifying
com.apple.Boot.plist
.