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I don't know how to check if my Macbook 13" white is 32-bit or 64-bit, how do I check that for any Mac or Linux system?

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migrated from Sep 29 '11 at 2:56

This question came from our site for professional and enthusiast programmers.

Interestingly, this question has 14 votes at StackOverflow.… – Jin Sep 29 '11 at 3:08
For Linux:… – studiohack Sep 29 '11 at 3:11
up vote 2 down vote accepted

Select About this Mac from the Apple menu, then click More Info

. enter image description here

. Mac OS X 10.5 (or greater) is a 64-bit operating system. Intel Core 2 Duo, Intel Xeon, and PowerPC G5 are 64-bit processors. However, 64-bit Stata for Mac is available only for 64-bit Intel-based Macs.

Linux or MAC

Type the uname -a command. Depending on the platform, you may see

[cph@gaylord ~]$ uname -a

Linux 2.6.11-1.27_FC3 #1 Tue May 17 20:24:57 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux

[cph@caddo ~]$ uname -a

Linux 2.6.9-5.0.5.EL #1 SMP Fri Apr 8 14:20:58 EDT 2005 ia64 ia64 ia64 GNU/Linux

[cph@tango ~]$ uname -a

Linux 2.6.10-1.771_FC2smp #1 SMP Mon Mar 28 01:10:51 EST 2005 i686 i686 i386 GNU/Linux

In the above listing, 'gaylord' (x86_64 GNU/Linux) and 'caddo' (ia64 GNU/Linux) are 64-bit compliant. 'tango' (i386 GNU/Linux) is only a 32-bit platform.

Source of Information

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