How to boot 64-bit Snow Leopard

The latest dev release of Leopard doesn’t automatically boot into 64-bit kernel except on an Xserve. To boot into 64-bit on any other Mac you must hold down the ’6′ and ’4′ keys at boot.

“If you’re not a fan of having to remember to hold down the “6″ and “4″ keys each time you re-boot, there’s a fix…”

Full article, with simple instructions on how to eliminate the need to hold the “6″ and “4″ keys at boot via a quick edit of the “com.apple.Boot.plist” file, here.