is Leopard and snow leopard the same thing?

[dvdbunny]

If not what is the difference between the two?

 

[J1234]

No, Snow Leopard isn't out yet.

It's the next version of OS X. (10.6, current is 10.5)

http://www.apple.com/macosx/snowleopard/

 

[MikeHunt79]

snow leopard is 64bit only

 

[Beepcake]

snow leopard is 64bit only

The versions I've used aren't, just Intel only.

 

[NickK]

The versions I've used aren't, just Intel only.

The kernel and more of the OS should be 64 bit. The Applications can still be 32bit or 64bit - there's arguments for both depending on the application.

 

[JAMAL]

I've seen pictures of it installed on a core duo which is 32bit?

 

[Beepcake]

I've seen pictures of it installed on a core duo which is 32bit?

Yep, it's definately not 64bit only at the moment.. although no doubt that 64bit machines are their focus.

 

[iSam]

Not 64bit exclusively at the moment. Might be at release.

Snow Leopard is probably going to be a general update to Leopard, it is unlikely to include any massive new features. Hence the name.

 

[NickK]

http://news.worldofapple.com/archiv...eopard-build-10a190-now-available-seed-notes/

64-bit Kernel

The early 2008 models of the Mac Pro, 15" and 17" MacBook Pro and Xserve can be used for 64-bit kernel development. Audio and AirPort are now enabled on these on these testing configurations. In SnowLeopard, the 64-bit kernel is is used by default on the Xserve and the Mac Pro and MacBook Pro systems can be booted into the 64-bit kernel in one of two ways:

1) Temporarily boot into the 64-bit kernel by holding down "6" and "4" while powering on the machine
2) Run `sudo nvram boot-args="arch=x86_64" ` to set the 64-bit kernel as your default kernel, and append any other debugging flags you may need, such as "debug=0x144". To revert back to the 32-bit kernel as the default, you can run `sudo nvram -d boot-args`.

This seed contains the necessary support for porting kexts to 64-bit and developers are strongly encouraged to do so.

Known Limitations in the 64-bit kernel:

- Shark does not work on the 64-bit kernel.
- Sleep / wake and power management is not currently supported. It is recommend that you disable sleep in System Preferences.
- Graphics acceleration is not yet supported which may cause programs which require graphics acceleration to run incorrectly.
- Some behavior which was previously unsupported, such as modifying a collection while enumerating it, and attempting to modify a kext's __TEXT segment, now results in diagnostic kernel panics.

So it will run 64bit - you just need to tell it to currently. I assume this is temporary until the limitations are sorted.


Also... this is interesting: http://www.usenix.org/events/lisa08/tech/hubbard_talk.pdf

 

[MikeHunt79]

I've seen pictures of it installed on a core duo which is 32bit?

c2d is 64-bit

 

[Nymins]

c2d is 64-bit

Core Duo is 32bit

Core 2 Duo is 64bit