Make ISO usb on a Mac Leave a Comment / Uncategorized / By Kyle Haubrich $ diskutil list Remember the disk# that is your flash drive $ diskutil unmountDisk /dev/disk# $ sudo dd if= path to file (You can drag and drop the file) of=/dev/disk# bs=1m The iso will process. This will take 10-60 minutes. (It will take some time) $ diskutil eject /dev/disk2