# Copy ISO image Now that you have the ISO image of YunoHost, you have to put it on a physical medium: **USB key** or **CD/DVD** --- ## USB key Download UnetBootin for your operating system and install it. Put your USB key on, select your YunoHost ISO and click "OK" --- ## CD/DVD The software to use differs regarding your operating system. * On Windows, use [ImgBurn](http://www.imgburn.com/) to write the image file on the disc * On Mac OS, use [Disk Utility](http://support.apple.com/kb/ph7025) * On GNU/Linux, you have plenty of choices, like [Brasero](https://wiki.gnome.org/Apps/Brasero) or [K3b](http://www.k3b.org/)