Unable to boot USB Kali linux on a MacBook Air mid2013 -

Hey everyone,

After many trials, searches and researches, I've eventually fell short on solutions. I now turn to you to seek guidance.

I run on a MacBook Air 2013 Yosemite 10.10.2 (14C109).

I followed exactly the dd process in the guide and managed to copy successfully the .iso on the USB (8GB HP v165w formatted in FAT ms-dos).

Then got this error message . "The disk inserted was not readable by this computer"

I installed rEFInd and yet when I reboot using the ALT key, the image doesn't show.

Has anyone encountered the same problem ?

Thanks