On GNU/Linux : The SD card may be presented on any device like /dev/sdx so use on the Terminal the command lsblk or sudo fdisk -lu to check. sudo apt-get install gddrescue xz-utils unxz myimage-raspberry-pi.img.xz sudo ddrescue -D –force myimage-raspberry-pi.img /dev/sdx On MacOSX : On MacOsx you’ll need a real package handler aka : …