[X4U] Booting from external drive

[Jens Selvig]

I decided I wanted to be able to make a bootable external hard drive  
for my MacPro. When I boot from the install CD, The Installer  
software says I am not allowed to install on any of the Firewire  
drives that are attached or the USB drive, either! I could install  
OSX on the second internal SATA drive.

Now, I am getting older, but I am not loosing my mind, (I HOPE) but I  
do know that doing this on the G4-G5 computers was easy.

Anybody have thoughts on what needs to be done.

Jens Selvig
...lost in Montana...