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norbs
25th March 2010, 10:58 AM
I did a search and couldn't find anything about this. I am sure someone can prove me wrong.

Was listening to a Podcast this morning and they mention 10.6 doesn't boot up with 64bot kernel by default, and that you need to hold down the 6 and 4 keys at boot time.

The main reason I can see if support for certain drivers that wont work in 64 bit mode. Does anyone know exactly what drivers they are? Is there a list?

glitch
25th March 2010, 11:31 AM
Not really any point in booting up with a 64bit kernel anyway - not unless you have at least 32GB RAM.

What is important is that when booted up in the 32bit kernel, you can run apps that are 64bit.

JaimeSharp
25th March 2010, 11:46 AM
That is right although if you had wanted to you could set in the boot settings or use kernel switcher to set it this method has to be redone or modify the boot.plist and set default kernel to 64 bit. as far as 64 bit support etc there is not alot of benefit to using it as 99% of apps are 32bit you might see some improvement on certain apps but I highly doubt it would be noticeable.

Check http://snowleopard.wikidot.com/ to see a list of programs etc it will show if it is 64 bit or not.

norbs
25th March 2010, 11:50 AM
Thanks for the replies.

glitch
25th March 2010, 12:24 PM
there is not alot of benefit to using it as 99% of apps are 32bit you might see some improvement on certain apps but I highly doubt it would be noticeable.

Check Snow Leopard Compatibility: Mac OS X 10.6 Snow Leopard compatibility table (http://snowleopard.wikidot.com/) to see a list of programs etc it will show if it is 64 bit or not.

Its irrelevant whether the apps are 64bit or not, they will run as 64bit apps even with a normal 32bit kernel boot.

JaimeSharp
25th March 2010, 02:37 PM
True i wasn't thinking when i posted that only will affect extensions/drivers any way.

Warthog
26th March 2010, 07:37 PM
I did a search and couldn't find anything about this. I am sure someone can prove me wrong.

Was listening to a Podcast this morning and they mention 10.6 doesn't boot up with 64bot kernel by default, and that you need to hold down the 6 and 4 keys at boot time.

The main reason I can see if support for certain drivers that wont work in 64 bit mode. Does anyone know exactly what drivers they are? Is there a list?

Instead of using the 6 an 4 keys, or terminal, I use this program:
Startup Mode Selector (http://www.ahatfullofsky.comuv.com/English/Programs/SMS/SMS.html)

Cheers