Hi, there. I know FreeBSD must be installed in primary and Linux can be installed in extended. What about NetBSD, OpenBSD and Solaris for x86? They must be installed in primary, too?
i never had that problem, i alway install it in primary partitions.....
you can create up to 4 primary partitions on an ide disk or (pls correct me if i am wrong) 3 primary an 1 extended with 16 virtuall partitions. i think that the virtuall partitions are handled by the OS.... so on my explanation you could install it on each partition but it must not be an virtuall partition...
pls correct me if i am wrong (the school is long time ago)....
greetings Pre�y
Well, I went to bookstore this morning and found some references. Linux could be installed in any partition including extended (logic) partitions; FreeBSD could be installed in any primary partition; OpenBSD's boot directory must be installed in first 8 G of the harddrive and the rest directories of the OpenBSD must follow the boot directory with no any other system directory's interuption. So I think basicly if I want to install multi-OS on one harddrive, then I must install OpenBSD first, and then FreeBSD and Linux. I didn't find the information about how to partition for NetBSD and Solaris for x86 yet, so if someone has experience about them, please give me some advice here.
Thanx. 
Actually, I went to the Sun site to look up the answer for Solaris. I found a very cool white paper and had to read to read it all 
Solaris must have its own primary partition. It must subdivide this primary partition into "slices" and the slice scheme will be familiar to anyone who uses Solaris on a Sparc. This will not be compatible with microsoft extended partitions.
I'm not sure if the link will work for you. But here it is: Solaris (Intel Platform Edition) Realmode Environment
(The information in the link states that it is covered by this license, so it's not secret or anything.)
Thanx, Perderabo. I found an installation guid (http://www.mclink.it/personal/MG2508/nbsdeng/chap-inst.html\) for NetBSD. It seems NetBSD must be installed in one of the four primary partions, so the only way to install all those OSes is to use vmware?