Download ARM image for Acer (make sure it's the acer one) Acer Arm Image Making the drive $ diskutil list Plug in the USB drive. In a Terminal window, execute this command: $ diskutil list Look for the new item--for me it was /dev/disk3 In a Terminal window, execute these commands: $ diskutil unmountDisk /dev/disk3 You'll probably need to unzip the file (I think it's xzip) $ unxz kali-{version}-acer.img-xz $ sudo dd if=kali-{version}-acer.img of=/dev/rdisk3 bs=1m $ diskutil eject /dev/disk3 Then follow the instructions on this page https://citruspi.io/kali-on-chromebook/