how install two freebsd9.2 on one disk?

Polytropon freebsd at
Sun Nov 17 15:36:42 UTC 2013

On Sun, 17 Nov 2013 16:51:42 +0330, saeedeh motlagh wrote:
> thanks guys for your useful reply.
>  thanks Polytropon for your complete answer. it helps me a lot. just i
> don't know how use boot manager yet. i create gpt partitions and install 2
> freebsd 9.2 on them (ada0p2 is / for the first OS and ada0p6 is / for the
> second one) but after restart, none of them boot.

You have been missing the boot blocks. :-)

> should i copy pmbr and gptboot by "gpart bootcode" command on ada0?
> (although i do it and nothing change) if not, where is boot manager and how
> should i use it? i think something should be done about boot partition
> (ada0p1), don't it? please help me to boot my 2 OS correctly.

With the "old" method, it's a simple call of fdisk and boot0cfg.
With the "new" method, you need to have a boot partition, for
example ada0p1, which is set active and contains the boot code,
in your case, the boot manager.

Have a look at Warren Block's installation guide and adjust the
bootcode command for the boot manager. See the "EXAMPLES" section
in the "man gpart" manpage.

Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...

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