Restore - Easy to create Windows multi-booting Installation Disc / ISO USB

Download WinUSB
https://www.winusb.net/
1. download the latest version and install
32bit/64bit
https://www.winusb.net/assets/WinUSB.exe

2. download windows iso file
windows 8.1
https://www.microsoft.com/zh-tw/software-download/windows8ISO

windows 10
https://www.microsoft.com/zh-tw/software-download/windows10

3.plug in USB drive and select iso to WinUSB wizard

4. click next to extracting file and merge all options of OS

(fig. 1)

(fig. 2)

(fig. 3)