Because not all drivers are yet ported, and you can run 64-bit applications fine with the 32-bit kernel?
Edit /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
Adding 'arch=x86_64' to the kernel flags should do the trick I think, so changing
Code:<key>Kernel Flags</key> <string></string>
to:
Code:<key>Kernel Flags</key> <string>arch=x86_64</string>
Mine also shows 64 bit kernel and extensions as "NO" Tried the "4" and "6" on booting and it didn't work, then tried editing the file you mentioned and osx wont let me save it. Any suggestions?
Thanks.