OpenBSD -> FreeBSD migration
mail at ozzmosis.com
Sun Apr 20 21:02:20 UTC 2008
On Sun 2008-04-20 15:59:14 UTC-0400, Andrew Wright (andrewhw at ieee.org) wrote:
> - it appears that FreeBSD and OpenBSD use the same partition
> table format. Is this true? If so, I can potentially avoid
> rebuilding an entire disk if I am right that ...
> - FreeBSD can mount and read OpenBSD's version of the 4.2 BSD
> filesystem implementation
My understanding is that the second ISO image of FreeBSD (eg.
7.0-RELEASE-i386-disc2.iso) is a "Live CD". That should enable you to
boot FreeBSD from CD and attempt to mount the file system (read-only
or read-write) that your OpenBSD installation lives on.
> If both of these are true, I can simply install FreeBSD over
> top of the OpenBSD /, /var and /usr partitions, and then be
> able to mount the old /home. Is this something people do?
I think prior to the FreeBSD install you would want to erase all files
in /, /var and /usr to remove any cruft that would be otherwise left
over from the previous OpenBSD installation.
Maybe I'm paranoid, but I would be wary of file system reliability
between two OSes, especially on a production system. On the other
hand maybe there is someone reading this who is successfully dual
booting FreeBSD and OpenBSD and sharing /home that may want to comment
further. Failing that, you could do some testing on a spare PC or in
I can't comment on the dump/restore or Linux compatibility.
More information about the freebsd-questions