You can find the Debian-style-/dev/sdb location after
$ sudo port install watch and then getting the address from the kernel ring buffer with
$ sudo watch --interval=1 'dmesg|tail' so
now you know the address to be something like
/Volumes/disk1s1 and for the mount-point like
/Volumes/Untitled 1 but Apple requires some syntactic sugar in
$ sudo umount /Volumes/UNTITLED\ 1/ umount(/Volumes/UNTITLED 1): Resource busy -- try 'diskutil unmount' but it won't stop us! So everything as one-liners below, enjoy!
$ sudo watch --interval=1 'dmesg|tail'
$ sudo diskutil umount /Volumes/UNTITLED\ 1/
Volume UNTITLED on disk1s1 unmounted
$ sudo dd if=en_windows_8_x86_dvd_915417.iso of=/dev/disk1s1 bs=1m
This so far is very close to working with distros such as Ubuntu here. Now we make only a small difference to this procedure to get it working with Apple computers, namely converting the ISO into special format usually labelled with DMG or just IMG.
The only difference to Apple is that you need to make the ISO file into special DMG file and upload that. An answer provided a video that solved the issue but this screenshot should contain all essential.