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Windows 7: Does Windows 7 64-bit boots defaultly in 64-bit Kernel

18 May 2010   #1
Ayoosh

Windows 7/ Windows XP/ Mac OSX Snow leopard
 
 
Does Windows 7 64-bit boots defaultly in 64-bit Kernel

Hey guys i have been writing windows 7 vs Snow leopard article but when it comes to 64-bit, snow leopard boots in 32-bit kernel by efault. What does win7 has


My System SpecsSystem Spec
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18 May 2010   #2
TimStitt

Windows 7 Ultimate 64 bit
 
 

Hi Ayoosh,

As far as I am aware windows 7 boots with a 64bit Kernel. I remember reading (a very very long time ago ) that the 64bit Kernel would not support any 32bit code (which I thought might be good against some virus'). I'll try to find something official for you. Watch this space.
My System SpecsSystem Spec
18 May 2010   #3
Ayoosh

Windows 7/ Windows XP/ Mac OSX Snow leopard
 
 

Quote   Quote: Originally Posted by TimStitt View Post
Hi Ayoosh,

As far as I am aware windows 7 boots with a 64bit Kernel. I remember reading (a very very long time ago ) that the 64bit Kernel would not support any 32bit code (which I thought might be good against some virus'). I'll try to find something official for you. Watch this space.
thank tim but what diffrenece does it make
My System SpecsSystem Spec
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18 May 2010   #4
TimStitt

Windows 7 Ultimate 64 bit
 
 

Here Microsoft states that the Vista 64bit Kernal offers Kernel patch protection and other goodies that aren't available in the 32bit Kernel. It would make no sense to boot in 32bit and not have DEP available or to change this for Windows 7. So I'm happy with my above statement.
My System SpecsSystem Spec
18 May 2010   #5
TimStitt

Windows 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by Ayoosh View Post
Quote   Quote: Originally Posted by TimStitt View Post
Hi Ayoosh,

As far as I am aware windows 7 boots with a 64bit Kernel. I remember reading (a very very long time ago ) that the 64bit Kernel would not support any 32bit code (which I thought might be good against some virus'). I'll try to find something official for you. Watch this space.
thank tim but what diffrenece does it make
Basically 64bit can have more RAM and process more data. I have heard tell that some 32bit processes can run slower on 64bit though due to having an extra process to go through; but I've never verified it. Was this what you meant?
My System SpecsSystem Spec
18 May 2010   #6
logicearth

Windows 10 Pro (x64)
 
 

The kernel of the 64bit editions of windows have been fully 64bit through and through. Only applications can run in 32bit mode.
My System SpecsSystem Spec
18 May 2010   #7
zzz2496

Windows7 Ultimate 64bit
 
 

Windows 7 64bit will boot using 64bit kernel, Mac OS X 10.6 Leopard's release doesn't differentiate 32bit and 64bit, thus for best backward compatibility, it boots into 32bit unless some perquisites are met (or you can invoke it manually, as long as your hardware meets the minimum requirement).

As for difference, other than kernel patch, different set of hardware drivers, wider addressable memory range, and WoW subsystem, it's not that different than 32bit.

zzz2496
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 Does Windows 7 64-bit boots defaultly in 64-bit Kernel




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