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64 bit?
#2416 08/30/09 04:11 AM
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besides holding keys down, I assume there's a more permanent way to make it always boot 64? (pmset something?)


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Re: 64 bit?
Virtual1 #2423 08/30/09 07:36 AM
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> [...] I assume there's a more permanent way to make it always boot 64? [....]

VersionTracker has several listed apps that do just that. (I won't link to any of them, because none have been thoroughly reviewed yet.)

If there's a Terminal command I haven't run across it yet.


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Re: 64 bit?
Virtual1 #2431 08/30/09 11:29 AM
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From 64-Bit Transition Guide: Kernel Extensions and Drivers:

Quote:
In both client and server versions, you can boot supported computers into 64-bit mode by holding down the 6 and 4 keys at startup time or by adding arch=x86_64 to your boot-args string using the nvram command.

You can also set the machine to boot into 32- or 64-bit mode on the next boot with

systemsetup -setkernelbootarchitecture i386 or systemsetup -setkernelbootarchitecture x86_64

as noted in man systemsetup.



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Re: 64 bit?
dkmarsh #2560 08/31/09 04:50 PM
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looks like a good thing to set as say, a noon root cronjob. or how do you make a shutdown item?

Or... is that a setting ONLY for next boot, or is it persistent?


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Re: 64 bit?
Virtual1 #2604 08/31/09 11:43 PM
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Since neither Mac in my household is 10.6-bootable, I'll let you do that research. wink



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Re: 64 bit?
dkmarsh #2661 09/01/09 06:30 PM
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It appears to be a persistent setting, but that set flag is not in the help/man pages and it has no complementary "get" variation to check/confirm.


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Re: 64 bit?
Virtual1 #2683 09/02/09 12:55 AM
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Mac OS X Manual Page for systemsetup(8)

The "get" variation, oddly, employs slightly different phrasing:

-getkernelbootarchitecturesetting as opposed to
-setkernelbootarchitecture



dkmarsh—member, FineTunedMac Co-op Board of Directors
Re: 64 bit?
Virtual1 #2789 09/03/09 06:37 AM
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Originally Posted By: Virtual1
I assume there's a more permanent way to make it always boot 64?

You can do it automatically by using this program.


Moderated by  alternaut, dkmarsh, joemikeb 

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