Possible values of an option:
The option description:
It is used only in a case when on the computer two disk drives are established. Then she allows to change their places, i. e. the first to make the second, and second first. As modern computers have a maximum one disk drive (yes even if disk drives two, inclusion of this option can lead to erroneous situations), the given possibility should be switched off ([Disabled]).
Other options identical to destination: