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How to boot 10.5.8 in 64-bit mode?


pihva
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Well, I tried to find the solution but with no luck.

My PC has 64-bit CPU Q6600 and 64-bit EFI.

 

I've edited com.apple.Boot.plist and added the string:

<key>Kernel Flags</key>

<string>arch=x86_64</string>

 

Check with Terminal:

 

ioreg -l -p IODeviceTree | grep firmware-abi

| | "firmware-abi" = <"EFI64">

 

but after I type:

uname -a

 

I have an answer:

root:xnu-1228.15.4~1/RELEASE_I386 i386

 

Is it mean 32-bit?

 

I believe that someone or even many of us has a successful experience. Please, share it.

 

______

My configuration:

Chameleon RC4

Mac OS X 10.5.8 Retail

Intel Bad Axe 2 Motherboard

Q6600

8GB RAM

NVidia Quadro 3500

SATA Drives

DVD-RW on PATA

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The kernel flag you're using is for Snow Leopard. 10.5.x doesn't have a full 64-bit mode like Snow Leopard has.

 

Unless you boot 10.5.x with the -legacy kernel flag, it's already as 64-bit as it can be.

 

Open Activity monitor and start Chess (it's in Applications). If it says Chess is running in 64-bit mode you're fine.

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