With 32-bit firmware, you cannot boot into 64-bit kernel it’s not possible. See this Apple tech note for which machines can boot the 64-bit kernel You Mac might be a few years old and have 32-bit EFI firmware (the code that runs to boot the Mac). Does your Mac have 64-bit EFI firmware? PERMALINK You’ll want to verify if your software has any issues in 64-bit mode. Apple really can’t be faulted here, but you can make an intelligent choice for yourself.
The reason not to boot into 64-bit mode is compatibility with software drivers of various kinds. But they won’t see full performance that way. Your 64-bit programs (if any) will run fine on a 32-bit kernel, gaining the benefits of 64-bit-ness. Why not get a good chunk of that for about $25? Tests of photographic applications show that the gains of booting with the 64-bit kernel can be substantial, keeping in mind that a 30% gain via hardware often costs several thousand dollars more. Update! The 2010 Mac Pro now boots the 64-bit kernel by default. Since page was written, over a year has passed. performance is still improved over Leopard.(I think Microsoft should change the name, it’s a perfect fit!). Known as Windows) turned off a lot of users. Like bad breath, bad press makes a lasting first impression.
MAC OS X 10.6 SNOW LEOPARD 32 BIT ISO MAC OS X
Update: the install disk for the 2010 Mac Pro now defaults Mac OS X 10.6.4 to 64-bit mode.īy default in 2009, Snow Leopard boots into a 32-bit kernel, an odd proposition for an OS claiming to be 64-bit. Updated - Send Feedback Related: Apple macOS, Mac Pro, sudo
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