Always when I need to make a bootable usb drive on a mac I struggle, I end up switching to windows because none of the below works for me, I'm using MacBook Pro:
sudo dd if=Debian.is of=/dev/rdisk2 bs=512kin terminal
- using Disk Utility, formatting the usb to have 1 partition, MBR and unmounting the partition, then dragging the iso image onto restore tab
diskutilsfor the above
On Windows we have plenty of tools. I always struggle with creating either Ubuntu bootable usb stick or Windows 7 in the company deployment process.