I have Windows Vista RC2 and Mac OS X installed on my
I installed both Haiku and BeOS Max edition (on
separate occasions), to a 2.5" external USB disk with
three partitions on it (all primary). The first one is
an NTFS, second a Fat32 (no operating systems
installed on those just for storage) and the last
partition on the disk is the BeFS partition.
I first installed Haiku, and tried to boot it through
rEFIt as an external disk, and it worked, but it just
got stuck booting. Every time after this, I would try
to boot it again, and Windows Vista (on my internal
disk) would boot up.
Later I reinstalled BeOS Max to the external drive,
booted it with rEFIt, and it booted too, but got stuck
on the networking icon. I shut it off, and the same
thing, I could never boot off of it again, Windows
Vista would always boot, even so I told it to boot off
of the primary active BeFS partition on the USB drive.
Just to verify, I tried booting the USB drive and BeOS
Max in VmWare, and it booted fine, no problems...