Michael R Zucca <mrz5149@cs.rit.edu> wrote:

>> > How hard would it be to create a MacBSD version of the startup disk 
control
>> > panel?
>> 
>> Probably not all that hard.  I think that there is simply a PRAM variable
>> which determines which SCSI ID to look at for the system.  I just wish
>> that MacOS had partition level granularity.  I run System 7.5.5 and System
>> 7.1 on my IIci, but I have to have 7.1 on a separate drive in order to
>> recognize and use it as a startup disk.  Ah welll.....
>
>Well, you can get finer grain. APS power tools lets you specify which
>partition you want to be bootable. My guess is that it reorders the
>partition map with the partition you want to boot off of as the
>first partition. That's just a guess.

It doesn't re-organize the Disk Partition Map as far as I could tell when 
I was testing Mkfs with various formatters.  As I recall it sets a flag 
in one of the fields in the Map entry. Some formatters really scramble 
the Partition Map when the users create and destroy partitions though.

-bob