Dual Boot USB Drive

I can install Windows 7 from USB. I can also install a Linux distro from USB. Is there a way of doing both?

Like, plugging in the USB drive and choosing Windows and installing Windows, or choosing -let's say- Ubuntu and installing Ubuntu.

Is this possible?

Yes it is. Essentially, you need to copy as many installation CDs (ISOs) as you want on to the pendrive and then use a bootloader (such as GRUB) to boot from the one you want.

Here are a few of the many programs that can help you set it up:

• Live USB creator
• Live USB multiboot
• unetbootin
• YUMI

A great source of information for this kind of thing is the pendrive linux website.