algorithm of setting BOOT_DEVICE

[Toomas Tamm]

Hello all!

Is there a human-language description of how the value of BOOT_DEVICE
gets determined in setup-storage? I tried to read the sources
(/usr/share/fai/setup-storage/Fstab.pm) but there are several pieces of
code dealing with assignment of this variable and tracking the necessary
conditions is complicated.

I would also want to know if there is a "standard" way of overriding the
decision of setup-storage (with regard to BOOT_DEVICE) for any
particular class of computers?

Toomas Tamm