Installing from a DVD drive: Insert the Windows installation CD/DVD into your CD/DVD drive.
Installing from an ISO/WIM/ESD/SWM/VHD/VHDX File: Click the button, then click the button and select the ISO/WIM/ESD/SWM/VHD/VHDX file from the open dialog box.
Please use the following guidelines to prepare your installation source. Run WinToHDD, then click the "New Installation" button. Tutorial to Reinstall Windows without using a CD/DVD or USB drive. If you have a Windows 10/8.x/7/vista installation ISO/WIM/ESD/SWM, a VHD/VHDX file which have Windows 10/8.x/7/vista installed, or a Windows 10/8.x/7/vista installation CD/DVD, you can use free Windows deployment tool WinToHDD to install Windows onto disks (HDD/SSD) other than the one where your Windows operating system is installed.