Snow leopard 10.6.4 doesn't uses second core.

[Screatch]

I got an Intel core 2 duo and i got a small problem.. For some reason Mac OS 10.6.4 doesn't uses second core.

 

Take a look at screenshot:

 

My CPU is recognized by Mac as 2 core.

[MaLd0n]

you used cpus=1 flag?

 

if yes

 

extract the DSDT and delete the Alias in Scope (_PR).

 

Scope (_PR)
 {
	 Processor (P001, 0x01, 0x00000810, 0x06) {}
	 Processor (P002, 0x02, 0x00000000, 0x00) {}
	 Alias (P002, CPU2)---------------------------------Problem
	 Processor (P003, 0x03, 0x00000000, 0x00) {}
	 Processor (P004, 0x04, 0x00000000, 0x00) {}
	 Alias (P004, CPU4)
	 Processor (P005, 0x05, 0x00000000, 0x00) {}
	 Processor (P006, 0x06, 0x00000000, 0x00) {}
	 Alias (P006, CPU6)
	 Processor (P007, 0x07, 0x00000000, 0x00) {}
	 Processor (P008, 0x08, 0x00000000, 0x00) {}
	 Alias (P008, CPU8)
 }

 

Solution

 

Scope (_PR)
 {
	 Processor (P001, 0x01, 0x00000810, 0x06) {}
	 Processor (P002, 0x02, 0x00000000, 0x00) {}
	 Processor (P003, 0x03, 0x00000000, 0x00) {}
	 Processor (P004, 0x04, 0x00000000, 0x00) {}
	 Processor (P005, 0x05, 0x00000000, 0x00) {}
	 Processor (P006, 0x06, 0x00000000, 0x00) {}
	 Processor (P007, 0x07, 0x00000000, 0x00) {}
	 Processor (P008, 0x08, 0x00000000, 0x00) {}
 }

 

 

 

*check your com.apple.Boot.plist

 

See what's on Kernel Flags

[Screatch]

I didn't use cpus=1 flag.

 

My com.apple.Boot.plsit as follows.

 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs$
<plist version="1.0">
<dict>
	<key>Kernel Flags</key>
	<string></string>
</dict>
</plist>

 

So.. how do i fix this?