From OpenSCADAWiki
Address of the disk for ISO-image recording looks as "/dev/sd{x}", and it can be found by the console command "$ dmesg", immediately after you connect the target USB-Flash drive. From the Linux environment you can write the ISO-image to the USB-Flash like this:
# The ISO-image writing to the USB-Flash:
$ dd if=Debian_8-OpenSCADA_0.9+r2294-TDE_R14-amd64-LiveCD_USB.iso of=/dev/sd{x} bs=4096
# The ISO-image writing directly from the booted CD/DVD disc
$ dd if=/dev/sr0 of=/dev/sd{x} bs=4096