The following articles do not contain helpful information on booting Debian/Linux from USB devices.
Howto Install a Debian GNU/Linux system onto a USB flash thumbdrive
http://feraga.com/node/25
follow these 12 simple steps
Booting Linux off of a USB drive
http://www.simonf.com/usb/
For Fedora Core, not for Debian
Boot and run Linux from a USB flash memory stick
http://www.pendrivelinux.com/
Boot Debian from an USB device
http://www.debian-administration.org/articles/446
it's about installing from an USB device. Sorry for the confusion.
Preparing Files for USB Memory Stick Booting
http://www.debian.org/releases/stable/i386/ch04s04.html.en
From Chapter 4. Obtaining System Installation Media,
for install, not use Debian.
HOWTO: Boot from USB
http://newsvac.newsforge.com/newsvac/06/01/17/0337237.shtml
Read more at hddsaver.com — tell you to install USB puppy linux.
Boot Linux from a FireWire device
http://www-128.ibm.com/developerworks/linux/library/l-fireboot.html?ca=dgr-lnxw09FireBoot
http://linuxdevices.com/news/NS2850840818.html
Too old: 15 Jul 2004
documented on: 2007.01.02