Reinstall without reformat

Kenta Suzumoto kentas at
Sun Oct 13 17:24:37 UTC 2013

Hi all. Is it possible to install FreeBSD without formatting the disk?
I have one directory of data that I want to keep. I can boot from the
installer and rm every directory except that (/bin /boot etc), but how
could I install the OS from there? I've done ZFS on root installs with
the shell and mounting the zpool to /mnt, would that work here too?

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