Hi, I'm a newbee on OS4 world.

On installation Guide of OS4, there's written we can choose the partition system by using the variable os4_bootdevice.

I have lot of systems on my machine and would like to choose my bootdevice with this option, but dont know who to use it.
For exemple,
what I have to do to boot on a first time on my DH0 partition and later choose to boot on the DH3 partition?


Help please.

Thx