Hi guys,

So I figured there had to be a way to boot into the 64-bit kernel, as System 
information only shows Mac OS X running 32-bit kernel and extensions.

So I go looking, and find a hint that you can either do this by forcing PRAM to 
boot the machine into 64-bit kernels, editing a configuration or simply holding 
down the 6 and 4 keys during boot.

but I didn't want to take the PRAM approach. I just don't like messing with 
nonvolatile stuff in the machine itself. If I was to edit the configuration of 
the boot.plist to make it always boot into the 64-bit kernel, it'd continuously 
do it until I changed it again. Of course, the downside to doing that would 
perhaps be driver compatibility, as not all drivers have been made 64-bit 
capable yet.

So I wanted to try the temporary method of holding down the 6 and 4 keys 
together making the Mac boot into the 64-bit kernel. Just once, to see if I'd 
encounter problems, and if I didn't have any issues I would change the boot 
plist. However, the method doesn't seem to do anything. Of course, I checked in 
the terminal if my firmware is 64-bit compatible, and it is.

I held down 6 and 4 while it was booting up. I tried two different methods. I 
tried holding it down as soon as I heard the Mac power on. That is, even before 
the startup sound. I was assuming you'd have to do that, since the boot loader 
has to contact the kernel after  BootX has been handed control by Open 
Firmware. Of course, the boot loader has to know which kernel to boot. 
I am assuming that you have to hold the two aforementioned keys down before the 
startup sound, as it has pretty much already loaded the kernel by that point, I 
believe.

So does anyone know why it isn't working? Well, it seemingly doesn't do 
anything.

Regards,
Nic
Skype: Kvalme
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