Reply 1 : 32 bit
boots into 32bit mode.
This does not stop you running 64bit apps or from addressing larger amounts of memory.
To check what mode you are booted into, go to the Apple menu and choose About this Mac.
In the resulting window, choose More Info
Now check the Software line in the left hand column. Not anything below it, just the line that says Software.
If it says "64-bit Kernel and Extensions: No" then you are in 32bit mode.
What exactly are you hoping to accomplish?
I suspect you have something that needs to run in 32bit mode, like Safari, to accomplish a certain function.
P
This does not stop you running 64bit apps or from addressing larger amounts of memory.
To check what mode you are booted into, go to the Apple menu and choose About this Mac.
In the resulting window, choose More Info
Now check the Software line in the left hand column. Not anything below it, just the line that says Software.
If it says "64-bit Kernel and Extensions: No" then you are in 32bit mode.
What exactly are you hoping to accomplish?
I suspect you have something that needs to run in 32bit mode, like Safari, to accomplish a certain function.
P
Reply 2 : 32 bit
it says yes , so how do i change this
Reply 3 : 32 bit
where it says, on startup, hold down the 3 & 2 keys
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P
Reply 4 : 32 bit
This isn't necessary on Macs like Windows. Microsoft made the decision not to use a function of CPUs known as PAE, which gives them 48-bit memory addressing, same as if you were running in 64-bit mode (long story short, the backwards compatibility with 32-bit programs on AMD and Intel CPUs means they only have 48-bit memory addressing, not 64-bit). And before you knock Microsoft for it, it really was the better solution given the nature of the Windows platform.
If you start up activity monitor, you'll undoubtedly see a few processes listed as "Intel (64-bit)". This effectively gives you the best of both worlds.
Now, if you are really jonesing to get into 64-bit mode, then you have to reboot your computer and hold down the "6" and "4" keys until you see the Apple logo appear. And you have to do this EVERY TIME YOU BOOT, because it's a one shot deal. There are programs which can force this to be permanent, but you probably want to make sure all your programs work properly in the 64-bit mode (some won't, particularly software for peripheral devices like printers) before you do that. And just FYI, to go from 64-bit mode as default to 32-bit mode, hold down the "3" and "2" keys at boot.
If you start up activity monitor, you'll undoubtedly see a few processes listed as "Intel (64-bit)". This effectively gives you the best of both worlds.
Now, if you are really jonesing to get into 64-bit mode, then you have to reboot your computer and hold down the "6" and "4" keys until you see the Apple logo appear. And you have to do this EVERY TIME YOU BOOT, because it's a one shot deal. There are programs which can force this to be permanent, but you probably want to make sure all your programs work properly in the 64-bit mode (some won't, particularly software for peripheral devices like printers) before you do that. And just FYI, to go from 64-bit mode as default to 32-bit mode, hold down the "3" and "2" keys at boot.
Reply 5 : 32 bit
every time you boot, because it is a one shot deal, why would you have to hold down the 3 & 2 keys to go from 64 bit to 32bit.
By you explanation, it should go back to 32bit by itself. (one shot deal)
Color me confused.
The OP was not jonesing to get into 64-bt mode, he wanted to get into 32 bit mode.
P
By you explanation, it should go back to 32bit by itself. (one shot deal)
Color me confused.
The OP was not jonesing to get into 64-bt mode, he wanted to get into 32 bit mode.
P
Reply 6 : 32 bit
That's if they use some program to change the EFI setting to boot into 64-bit mode by default and then want to go back to 32-bit mode for some reason. Might also be handy for a few odd Mac Pro users where 64-bit mode is the default.
But, you're right, looks like I misread the post. My mistake. The OP can disregard pretty much my entire post, unless for some reason they used one of those programs to change to 64-bit mode by default. Obviously the best method would be to use that same program to change it back, but if they only need it temporarily...
But, you're right, looks like I misread the post. My mistake. The OP can disregard pretty much my entire post, unless for some reason they used one of those programs to change to 64-bit mode by default. Obviously the best method would be to use that same program to change it back, but if they only need it temporarily...
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