Can anyone help me with this?! I had Windows installation disc from which I copied files to my pc desktop. Now I want to create bootable Iso file to store it on my backup drive for future usage. Using Nero burning rom I open new>choosing dvd from as compilation>new>adding the files I copied>choosing Image recorder>burn and save type as Iso. It creates Iso image but it's not bootable, when I burn it and restart pc it does not boot from the disc (bios first boot device is set to dvd drive). What am I doing wrong?