Hi, I have a laptop running kubuntu without any windows installed. I have downloaded the KNOPPIX ISO image The laptop I am using has no DVD unit. I need to know how to make a bootable USB-stick. Preferable it should work on both 32-bit (Pentium-4) and 64-bit (AMD or Intel CPU). I have a couple of computers but no working windows version. They was dying years ago and reinstall them with GNU/Linux Live USB. Previous Live iso images I just did "dd if= of=/dev/sdb bs=4M" and was able to restart the computer booting the live usb stick. I have tried above method and unetbootin without any luck. How do I continue?