Thanks for your interest.

I know there is a limitation that only 4 partitions can be on one disk?

But my Windows got 2 primary partions (one for boot, the other is extension partition.) Linux got 2 others (one is for the system, the other is for Swap). Now a FreeBSD is wanted to install in the same computer so I nee the fifth primary partion.

The problems are:
1) I have installed many softwares in D:/ partition in Windows, so I don't want to merge all Windows partitions into a single one.
2) There is another solution to delete the Linux Swap partition and make a Swap file instead. But I don't know whether it is good or not.

Thank you very much indeed.

Zhanmei

you can use logical partitions instead. And yes, there is a four primary partition limit

Thanks mirradric.

But which one can I use logical partition instead? Windows cannot, Linux cannot and FreeBSD cannot.

How about Linux Swap partition? But a logical partition must belong to a Extension partition which is also a primary partition.

Maybe there is some mistake in my understanding.

Thanks again.

oh... i didn't read your problem carefully enough....
A solution that should leave both your OSes intact is to get another hard-disk.
Is your hard disk already completely filled? If so then this is proably your best solution.
If not there are other solutions.

This is a good solution, but I am sorry I didn't post enough information. I am using a laptop, so one disk only.

I have 6GB space unallocated in my laptop, that should be enough for a basic FreeBSD system.

I wanna know whether it is possible to install three operation systems (Windows, Linux, FreeBSD) in one disk.

Thanks anyway.

yes...

what is the partition number of your swap partition??
if it's the last partition i.e hda4 then you are in luck.

Oh I see you have thought about deleting the swap partition...
you can create a swap partition on a logical drive.
but i think freeBSD needs a primary partition right??
hmmm

i think you can delete the swap partition and make a logical swap partition and then create a primary partition for freeBSD. The logical partition needs to be next to you logical windows partition so you might have to resize it if it is not already next to it.

Ok, I think that's probably a good idea.
I will try tonight and tell you what happens here.

Thanks for your time indeed.

Zhanmei

some last words...
Don't forget to make the appropriate changes to your /etc/fstab