I want to boot my computer with usb drive

Thanks. I think it possible, because I find it in boot menu, to boot from usb. But it's doesn't work. But I am waiting for it.

I think you can tweak your BIOS, you can change the sequence of your booting process, instead of dvd/cd drive comes first, you can alternatively chose usb to be the first one your computer will boot, your computer is finding the location of the operating system to boot up. you can notice this when you reformat your computer, u usually insert your cd containing the operating system on your dvd/cd drive...when your computer starts up it finds the location of the operating system. and since you inserted the cd into your dvd/cd drive the computer found it at the first boot. you can go to your bios by pressing F1 when you boot... and you can view the options there.