Further, it will copy the principal DOS system files, that is, the DOS-BIOS (IO.SYS or IBMBIO.COM) and the DOS kernel (MSDOS.SYS or IBMDOS.COM) into the root directory of the target.
This action will also transfer the central DOS system files, including the DOS-BIOS (IO.SYS or IBMBIO.COM) and the DOS core (MSDOS.SYS or IBMDOS.COM), into the main directory of the target.