How to check whether the MAC system is a 32-bit or 64-bit Operating System

(1) Click the (Apple logo) icon in the upper left corner of the toolbar. For more information about the local machine, click system report (in the left navigation bar ).

(2) Open the terminal and enter the command uname-A and press Enter.

X86_64 indicates that the system is 64-bit.

I686 indicates the 32-bit

For example, my

(3) Enter commands on the terminalIoreg-l-P iodevicetree | grep "firmware-Abi" | sed-E's/[^ 0-9a-z] // G'

Output: efi64 -- indicates that the system is 64-bit.
Output: efi32 -- it indicates that the system is 32-bit.

For example, my

For how to switch 32 to system mode and 64-bit system mode, see:

Mac tips: Check whether 64-bit computation is enabled on Mac OS X of the Apple Computer and how to set the 32/64-Bit mode

Turn on Mac 64-bit to experience pleasure!