Mac os x 64 bit check

How to See if Your Mac’s Processor is 32-bit or 64-bit
Contents:
  1. How to check to see if your Mac applications are bit or bit | iMore
  2. How to find out if your Mac’s software is 32- or 64-bit
  3. Previous Warnings
  4. Apple's New Mac Update Is Here (and Free). But You Might Want to Wait

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Reproduction without explicit permission is prohibited. Posted by: William Pearson in Command Line. March 29, at am. Josh says:. February 14, at pm. Charlie says:. December 1, at pm. Check if your Mac is 64 bit Everything is Gray says:.


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October 8, at pm. September 30, at pm.

How to check to see if your Mac applications are bit or bit | iMore

Leave a Reply Click here to cancel reply. Shop on Amazon. Subscribe to OSXDaily. Note: Mac OS X This knowledge base article from Apple should provide you with the correct answer as it depends on how old your MacBook Pro is.


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As you may have seen from all the answers - macs are different than other Operating Systems OS in that the 32 bit and 64 bit dividing line is all blurry. You can have 32 bit code run on a 64 bit CPU. A nice overview of this subject is at Apple's bit Transition Guide Keep in mind, this transition was started before Tiger was released on April 29, and is still happening. For the purposes of this document, bit computing is defined as support for a bit address space—that is, support for concurrent use of more than 4 GB of memory by a single executable program—no more, no less.

Beginning with version Also - CPU that are "bit" still have parts that are only 32 bits wide. Similarly, CPU that are "bit" also have parts that are bits or more wide. This is why most people focus on the address space for a specific program rather than whether the hardware is "bit" or how much of it is "bit". It really doesn't matter until you get to a more specific question.

How to find out if your Mac’s software is 32- or 64-bit

Why are you asking about this? I hope this general overview helps your understanding of what people really mean when they are discussing their bits. In a terminal window type uname -m. Go to the Apple Menu and select "About this Mac".

Previous Warnings

Mac OS X is fairly bitness-agnostic, so either should work. If still in doubt, use the bit version. Then look at the column Kind. If it says Intel , then you are currently running 32bit mode. If it says Intel bit , then as the text says, you are running 64 bit mode. Note: You must show All processes , from te dropdown next to the search box filter. Then you can check Nate Bird 's answer on what processor you have and the supported modes for it.


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  • How to check to see if your Mac applications are 32-bit or 64-bit;

Many OS X programs come in universal binary format, meaning that they have multiple versions some combination of PowerPC bit, PowerPC bit, Intel bit, and Intel bit included in the same file. Eclipse apparently doesn't come this way, so you have to decide which version to download. I'm not familiar enough with it to know if it has to run in the same mode as what you're trying to debug; if so, run your program, and look for it in Activity Monitor to see what mode it's running in.

How to find out if your Mac is 64 bit or 32 bit - OS X

If Eclipse doesn't have to be in the same mode or the Java code just runs inside Eclipse , then you can use either one unless you're on a bit-only CPU, i. Core Solo or Core Duo. As already stated by Gordon Davisson, fat binaries may include both bit and bit executables of a program see also Multiple Architecture, Single Build.

Run uname -a in the shell to show details about the kernel. Thank you for your interest in this question.

You Can Run Wine-Based Apps, Too

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Apple's New Mac Update Is Here (and Free). But You Might Want to Wait

How to check whether my Intel-based Mac is bit or bit Ask Question. Asked 8 years, 3 months ago. Active 4 months ago. Viewed k times. How can I tell the 32 or 64 bit capabilities of my Mac? What version of the OS are you running? When was your MacBook Pro built? It's quite simple. Go to the Apple logo and select "About this Mac. If it says Core 2 Duo, then it is 64bit ignore the 32bit kernel issue, it will run 64bit software just fine.

Physically, if your MBP has a black keyboard, it is absolutely 64bit. The original MBPs had a silver keyboard and the 32bit units were all but replaced in early So if you purchased your model even in the later course of , then it is a Mac capable of running 64bit. Also, if you are running Lion, then you are 64bit as Lion does not run on 32bit Macs.

Paul Lefebvre Paul Lefebvre 2 2 silver badges 5 5 bronze badges. System Profiler isn't installed on my machine—or Spotlight can't find it—so this answer won't work for everyone. What is your machine and OS? The name was changed to "System Information" a while ago it's in Utilities folder. I did find the System Information app. It would be good to update the answer for the benefit of others.

Unfortunately, I couldn't find the "bit Kernel and Extensions" item in the Software section of the System Information app.