Possible values of an option:
[None], [360K, 5.25 in.], [1.2M, 5.25 in.], [720K, 3.5 in.], [1.44M, 3.5 in.], [2.88M, 3.5 in.]
[Not Installed], [360 KB 5¼ inch], [1.2 MB 5¼ inch], [720 KB 3½ inch], [1.44 MB 3½ inch], [2.88 MB 3½ inch]
The option description:
Despite that the disk drive is considered for a long time already the out-of-date device, many computers continue to be equipped with it. This option allows to specify type of the used disk drive of floppy disks. In overwhelming majority of cases it will be [1.44M, 3.5 in.] ([1.44 MB 3½ inch]) and only in case of absence of the disk drive as that select [None] ([Not Installed]).
Other options identical to destination: