For multi-booting you can use LILO (with Linux), NT Loader (with NT) or a third party utility.

I have used SystemCommander in the past with great success.

Example:

A friend gave me a 2 gig SCSI drive with a 2940UW/W controller. I put it into my machine and booted. SystemCommander automatically recognized that the new drive had UnixWare and automatically setup a boot icon in the selection menu. I was quite happy with the results.

These days, I just use removable IDE trays on my machines. I can get them at the Saturday Sale in Dallas for $10 for tray and 5 1/2 inch bay. I just swap the HDs and reboot.

It also helps when somebody else brings over a HD that I need to retrieve data from. I put it into a tray and reboot and can access data.

Most excellent!

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Not quite as cool as all the other Kids...