Email this to a friend
posted on July 7th 2015, at 14:21
by lunarg

It may be useful to know whether your Mac has a 32-bit or 64-bit EFI. This can be done by running the following command from an OSX Terminal (can run from the installer or recovery partition):

ioreg -l -p IODeviceTree | grep firmware-abi

This should return something like the following:

• For 32-bit EFI:  | | "firmware-abi" = <"EFI32">
• For 64-bit EFI:  | | "firmware-abi" = <"EFI64">

Send a link to this post to yourself or a friend.

Send to e-mail:
Your name:
Your e-mail:
Type the letters and numbers as shown.
Not readable? Get another.
Information entered is solely used for sending a one-time e-mail, and is not retained and/or passed on to a third party.