How to find out if your system is 32-bit or 64-bit

Windows

Start > Control Panel > System – will give you the information you seek.

Mac OS X

About this Mac > More Info > System Report > Hardware – look at the processor name if it says Intel Core Solo or Intel Core Duo then you have a 32-bit machine.

Ubuntu Linux

Open a terminal and run # uname -m – If it says i686 = 32-bit, and x86_64 = 64-bit.

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