Master boot records are limited to four which is where the limit comes from. It is theoretically possible to have the MBR point to a new disk location where you could have a boot manager that supports unlimited boot partitions. But that requires all the booting is in software and outside the BIOS.

A simple solution is to use 2 disks. Each with four partitions. The FreeBSD bootmanager will offer to boot from disk2. On disk 2 you can have your remaining OS's.


        -Derek


At 10:40 AM 8/8/2006, Girish Venkatachalam wrote:
Dear all,

I was wondering if the 4 primary parition booting
limit still exists. Is it possible to have

Windoze
Linux
FreeBSD
OpenBSD
NetBSD

on the same box in such a way that we can boot into
any of them?

I am particularly interested in the x86 arch with IDE
disks. I think this is possible on other archs with
SCSI.

What boot manager am I supposed to use? Does it
require setting something on the BIOS? Does FreeBSD
support booting from a point way off the first sector?

Thanks.

regards,
Girish

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