Install Ubuntu or Kubuntu on a External USB Drive

I have a few external hard drives (SSDs and Platters (SATA), is this possible that I can install Kubuntu 10.10 x64 or Ubuntu 10.10 x64 onto one of these external hard drives? My System supports booting off a usb, it will just give me a learning playground without spoiling my existing operating environment. I know I can install as Virtual machines, but installing U/Kubuntu on a External HDD and booting off it would be easier.

Will be grateful for your insights....and steps to do so. Thanks

Solution 1:

See "Installing Ubuntu 7.04 to a USB Hard Drive" - http://www.pendrivelinux.com/installing-ubuntu-to-a-usb-hard-drive/