OpenBSD -> FreeBSD migration
ivoras at freebsd.org
Mon Apr 21 09:27:12 UTC 2008
Andrew Wright wrote:
> Hi All;
> I want to migrate a system from OpenBSD 4.2 (ie; the current version)
> to FreeBSD (7.0). I have poked around on the archives a little
> to determine how best to do this, and I want to make sure that
> my understanding (summarized below) is indeed correct. If I am
> asking these questions on the wrong list (potentially likely for
> the AMD specific questions) then please let me know:
> Filesystem stuff:
> - 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 ...
No, I don't think that's true. In any case, you can verify it by booting
a live-CD of FreeBSD and trying it.
> 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?
If you delete everything from all directories except /home, it might
work. Otherwise, the risk of getting mixed binaries, libraries and
scripts from both systems is too great.
> Processor stuff:
> - The machine of interest has an AMD64 processor. I have seen
> several references to running Linux emulation on an AMD processor,
> but I would like to confirm that this is true while running the
> 64-bit version of the OS. In other words:
> - with a 64-bit installation (amd64) of FreeBSD 7.0, emulation
> of 32-bit Linux binaries (notably Matlab, but possibly other
> software as well) is possible, and indeed a reasonably
> well-known way of proceeding.
I think 32-bit Linux binaries should be supported on 64-bit FreeBSD
alongside 32-bit FreeBSD binaries.
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