how to install os by using usb device

we don't need to use dvd or cd to install the operating system, it would be convenient by using usb and save a lot of cost due to the fact that some hardware companies won't produce cd or dvd devices on your computers.

firstly, you need make your usb device bootale,

so using the software UltraISO V9.3.5.2716 http://dw.ezbsys.net/uiso9_pe.exe

here is the key

Name:TEAM ZWT
Key:4FFB-6D99-4A3D-07B9

1.using your BitComet or other downloader download ultraISO v9.3.5.2716

2.using ultraISO file button to open the operating system iso. file which was saved on your computer.

3. then choosing the bootable, and select the fourth item

4.in the popup screen , you choose usb and USB-HDD+ and you format your usb

device then you can make a bootable usb device.

Finallly, you just go to your computer setup (bios) and make your first boot device as usb hdd, then you can install your operating system completely. good luck!