Tweakhound.com has an interesting review about a panel that lets u choose the OS to boot with a push of a button.
"The Trios II allows you to have up to 3 operating systems on one machine
and switch between them with the push of a button. I had heard about the
original Trios some time ago and thought, "Sounds cool. Probably doesn't
work." Then the Trios II came out and I began hearing good things about it
from people I knew and trusted. Since my foray into the Linux world, the
first and most popular question I get is, "How do I dual boot with Windows?"
My answer was always, if you have to ask, don't do it. Why? Because I've
seen even alpha-geeks hose their machine dual booting."
Buy the Trios II at TigerDirect.com
Romtec Trios II Multiple Hard Drive Selector
Don't Miss: See the first leaked Black Friday 2016 Ad
Introducing the Romtec Trios II Multiple Hard Drive Selector. Using different hard drives or devices for different tasks is a smart way to work. No software required, comes with all accessories, OS protecting buttons and more. Easy to install!
3 Computers in 1
Run up-to three independent Operating Systems in a single computer. Each O/S is on a separate Hard Drive and isolates each other. There is no need to deal with software. Setup the computer in any desirable fashion for backups, usable multi-lingual O/S, sharing with family and co-workers, etc.
Trios II controls not only one drive at a time but also controls 2 drives simultaneously. Master + Slave setup enables you to run 2 drives, one drive as Master the other as its slave. You can create your own configuration among the Hard Drives (O/S or Data drives), CD ROM & Writer, 3D Imation Drives, DVD player & writer, ZIP Drives, etc. See Detailed Configurations
Universal Flexibility (Capability)
Trios II is capable for not only hard drives, but also CD ROM & Writer, DVD player & writer, ZIP Drives, 3D Imation Drives, etc. which means you can choose amongst any of the 3 drives.
Don't Miss: The Best HDR TVs
Trios II is compatible with any IDE devices.